Content-modification system with feature for detecting and responding to content modifications by tuner devices

ABSTRACT

In one aspect, a method includes identifying a group of multiple content-presentation devices that are tuned to the same channel and that are each scheduled to perform, at a modification start-time, a respective content-modification operation that comprises modifying a modifiable content-segment in connection with an upcoming content-modification opportunity on the channel. The method also includes determining that, after the modification start-time, at least a subgroup of the group of content-presentation devices have detected a mismatch between reference fingerprint data representing the modifiable content-segment and query fingerprint data representing content received by at least the subgroup of content-presentation devices. The method also includes determining that at least the subgroup of content-presentation devices are connected to tuner devices associated with the same content distributor and, in response to determining that at least the subgroup of content-presentation devices are connected to tuner devices associated with the same content distributor, performing an action.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.17/162,490, filed Jan. 29, 2021, and now allowed, which claims priorityto U.S. Provisional Pat. App. No. 63/007,339, filed Apr. 8, 2020, all ofwhich are hereby incorporated by reference herein in their entireties.

USAGE AND TERMINOLOGY

In this disclosure, unless otherwise specified and/or unless theparticular context clearly dictates otherwise, the terms “a” or “an”mean at least one, and the term “the” means the at least one.

SUMMARY

In one aspect, a method includes identifying a group of multiplecontent-presentation devices that are tuned to the same channel and thatare each scheduled to perform, at a modification start-time, arespective content-modification operation that comprises modifying amodifiable content-segment in connection with an upcomingcontent-modification opportunity on the channel. The method alsoincludes determining that, after the modification start-time, at least asubgroup of the group of content-presentation devices have detected amismatch between reference fingerprint data representing the modifiablecontent-segment and query fingerprint data representing content receivedby at least the subgroup of content-presentation devices. The methodalso includes determining that at least the subgroup ofcontent-presentation devices are connected to tuner devices associatedwith the same content distributor. The method also includes in responseto determining that at least the subgroup of content-presentationdevices are connected to tuner devices associated with the same contentdistributor, performing an action.

In another aspect, a non-transitory computer-readable storage medium hasstored thereon program instructions that, upon execution by a processor,cause performance of a set of operations. The set of operations includesidentifying a group of multiple content-presentation devices that aretuned to the same channel and that are each scheduled to perform, at amodification start-time, a respective content-modification operationthat comprises modifying a modifiable content-segment in connection withan upcoming content-modification opportunity on the channel. The set ofoperations also includes determining that, after the modificationstart-time, at least a subgroup of the group of content-presentationdevices have detected a mismatch between reference fingerprint datarepresenting the modifiable content-segment and query fingerprint datarepresenting content received by at least the subgroup ofcontent-presentation devices. The set of operations also includesdetermining that at least the subgroup of content-presentation devicesare connected to tuner devices associated with the same contentdistributor. The set of operations also includes in response todetermining that at least the subgroup of content-presentation devicesare connected to tuner devices associated with the same contentdistributor, performing an action.

In another aspect, a computing system includes a processor and anon-transitory computer-readable storage medium, having stored thereonprogram instructions that, upon execution by the processor, causeperformance of a set of operations. The set of operations includesidentifying a group of multiple content-presentation devices that aretuned to the same channel and that are each scheduled to perform, at amodification start-time, a respective content-modification operationthat comprises modifying a modifiable content-segment in connection withan upcoming content-modification opportunity on the channel. The set ofoperations also includes determining that, after the modificationstart-time, at least a subgroup of the group of content-presentationdevices have detected a mismatch between reference fingerprint datarepresenting the modifiable content-segment and query fingerprint datarepresenting content received by at least the subgroup ofcontent-presentation devices. The set of operations also includesdetermining that at least the subgroup of content-presentation devicesare connected to tuner devices associated with the same contentdistributor. The set of operations also includes in response todetermining that at least the subgroup of content-presentation devicesare connected to tuner devices associated with the same contentdistributor, performing an action.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a simplified block diagram of an example content-modificationsystem in which various described principles can be implemented.

FIG. 2 is a simplified block diagram of an example computing system inwhich various described principles can be implemented.

FIG. 3 is a diagram of example linear sequences of content and relatedconcepts.

FIGS. 4A, 4B, 4C, 4D, 4E, and 4F collectively make up a table showingexample time-periods and corresponding operations that can be performedin connection with the example content-modification system.

FIG. 5 is a sequence diagram of operations that can be performed when atuner device performs a content-modification operation at the request ofa content distributor.

FIG. 6 is a flow chart of an example method.

FIG. 7 is a flow chart of an example method.

FIG. 8 is a flow chart of an example method.

DETAILED DESCRIPTION I. Overview

To deliver and present content to end-users, a content provider cantransmit the content to one or more content-distribution systems, eachof which can in turn transmit the content to one or more respectivecontent-presentation devices to be output for presentation to respectiveend-users. Such a hierarchical arrangement can facilitate convenient,widespread distribution of content.

By way of example, in order for a video content provider to delivervideo content to end-users throughout the United States, the videocontent provider can transmit the video content by satellite or anothermedium to content-distribution systems that serve respective designatedmarket areas (DMAs) within the United States. Each suchcontent-distribution system can therefore receive the national satellitefeed carrying the video content and can transmit the video content totelevision sets and/or set-top boxes in the content-distributionsystem's DMA, such that the video content can be output for presentationto respective end-users in that DMA. In practice, thesecontent-distribution systems and their means of transmission tocontent-presentation devices can take various forms. For instance, acontent-distribution system can be associated with a cable-televisionprovider and can transmit video content to content-presentation devicesof end-users who are cable-television subscribers through hybridfiber/coaxial cable connections.

As such, in various scenarios, a content-distribution system cantransmit content to a content-presentation device, which can receive andoutput the content for presentation to an end-user. In some situations,even though the content-presentation device receives content from thecontent-distribution system, it can be desirable for thecontent-presentation device to perform a content-modification operationso that the content-presentation device can output for presentationalternative content instead of at least a portion of that receivedcontent.

For example, in the case where the content-presentation device receivesa linear sequence of content segments that includes a givenadvertisement segment positioned somewhere within the sequence, it canbe desirable for the content-presentation device to replace the givenadvertisement segment with a different advertisement segment that isperhaps more targeted to the end-user (e.g., more targeted to theend-user's interests, demographics, etc.). As another example, it can bedesirable for the content-presentation device to overlay on the givenadvertisement segment, overlay content that enhances the givenadvertisement segment in a way that is again perhaps more targeted tothe end-user. The described content-modification system can facilitateproviding these and other related features.

In one example, the content-modification system can include afingerprint-matching server that can identify an upcomingcontent-modification opportunity on an identified channel, which it cando by comparing and detecting a match between two different instances offingerprint data. Based on the detected match, the fingerprint-matchingserver can then transmit fingerprint data and metadata to thecontent-presentation device data to facilitate preparing thecontent-presentation device to perform a content-modification operationin connection with the identified upcoming content-modificationopportunity.

However, in other cases, it may be desirable for thecontent-presentation device to use one or more alternative techniques tofacilitate performing a content-modification operation.

For example, the fingerprint-matching server can use broadcast-scheduledata to facilitate the content-presentation device performing acontent-modification operation. Among other things, this can allow thecontent-presentation device to facilitate performing acontent-modification operation without using fingerprint data or byusing fingerprint data in a more limited fashion. This can be beneficialin the case where the content-presentation device does not receive orotherwise have access to fingerprint data, or where the use offingerprint data is undesirable for one or more reasons (e.g., becausefingerprint-based techniques may be computationally expensive).

In accordance with an upcoming content-modification opportunity, acontent-presentation device or other content display device of thecontent-modification system can be scheduled to replace a modifiablecontent-segment (e.g., an advertisement designated as a candidate forreplacement) with supplemental content (e.g., a replacementadvertisement) at a modification start-time. However, there can besituations in which the content-presentation device does not receive themodifiable content-segment.

For example, this can be due to broadcast schedule slippage in which acontent-distribution system is originally scheduled to broadcast themodifiable content-segment, but instead broadcasts alternative content(e.g., a different advertisement) without providing thecontent-modification system with an updated broadcast schedule. In thissituation, the content-presentation device can receive the alternativecontent instead of the modifiable content-segment that thecontent-presentation device is expecting to receive.

As another example, the content-presentation device can be connected toa set-top box (STB) or other type of tuner device that is not part ofthe content-modification system and is associated with a multi-channelcontent distributor such as a multi-channel video program distributor(MVPD). With such an arrangement, before the modification start-time,the STB might replace the modifiable content-segment with alternativecontent, different from the supplemental content, such as a differentreplacement advertisement associated with an advertiser with which theMVPD has made an agreement to run advertisements. In this situation, thecontent that the content-presentation device receives can include thealternative content instead of the modifiable content-segment that thecontent-presentation device is expecting to receive.

As a result, beginning at the modification start-time of thecontent-modification opportunity, the content-presentation device mightinitiate replacement of the alternative content with the supplementalcontent. Then, after a short period of time (e.g., a few seconds afterthe modification start-time), the content-presentation device mightdetermine that the content that is being replaced is not the expectedmodifiable content-segment. For example, if the STB replaces themodifiable content-segment, the content-presentation device can receive,from the fingerprint-matching server, reference fingerprint datarepresenting the modifiable content-segment and locally compare thereference fingerprint data against query fingerprint data that isgenerated by the content-presentation device and that represents thecontent being received from the STB (e.g., the alternative content,instead of the modifiable content-segment). The content-presentationdevice can thus detect a mismatch between the reference fingerprint dataand the query fingerprint data and can responsively stop performing(e.g., abort) the content-replacement operation.

Further, when performance of the content-replacement operation isstopped, the display of the alternative content might abruptly end aftera few seconds worth of frames, and the supplemental content might bedisplayed thereafter. Thus, the content-presentation device stoppingperformance of the content-modification operation after thecontent-modification operation has already begun can result in anundesirable user experience. This can also be problematic in situationswhere a large number (e.g., hundreds or thousands) ofcontent-presentation devices are scheduled to performcontent-modifications at the upcoming content-modification opportunity,but are connected to respective STBs that cause the content-presentationdevices to detect mismatches.

Accordingly, the present disclosure provides methods and systems thatimprove the content modification process for a content-modificationsystem by providing a mechanism that enables the content-presentationdevice to override the alternative content in the situations describedabove, especially in the situations in which the STB modifies themodifiable content-segment with the alternative content. The presentmethods and systems might also facilitate the content-presentationdevice performing alternative actions as well in such situations, suchas notifying the fingerprint-matching server that thecontent-presentation device did not receive the modifiablecontent-segment and/or aborting the content-modification operation.

In particular, the content-presentation device can receive referencefingerprint data representing the modifiable content-segment and make acomparison of the reference fingerprint data with query fingerprint datarepresenting content received by the content-presentation device from atuner device connected to the content-presentation device. Based on thecomparison, the content-presentation device can detect, within apredefined time period (e.g., second) after the modification start-timeand during performance of the content-modification operation, a mismatchbetween the reference fingerprint data and the query fingerprint data.In response to detecting the mismatch within the predefined time periodafter the modification start-time and during performance of thecontent-modification operation, the content-presentation device canperform an action, such as continuing the content-modificationoperation, aborting the content-modification operation, or notifyinganother computing system in the content-modification system of themismatch being detected within the predefined time period.

Additionally, the present methods and systems provide operations thatcan be performed on the server-side in conjunction with thecontent-presentation device improvements described above.

In particular, the fingerprint-matching server can determine that thecontent-presentation device has detected the mismatch within thepredefined time period after the modification start-time and duringperformance of the content-modification operation. Thefingerprint-matching server can then determine that the mismatch is dueto the tuner device having modified the modifiable content-segmentbefore the modification start-time, and responsively perform an action,such as an action that facilitates the content-presentation deviceaborting or continuing its content-modification operation.

Furthermore, the present methods and systems also provide operationsthat improve the manner in which the content-modification system detectsand responds to situations in which fingerprint mismatches detected by agroup of content-presentation devices (e.g., tens, hundreds, orthousands of devices) are all or mostly occurring within the samecontent distributor footprint.

In particular, the fingerprint-matching server can identify a group ofcontent-presentation devices (e.g., tens, hundreds, or thousands) thatare tuned to the same channel and each scheduled to perform a respectivecontent-modification operation at the modification start-time. Thefingerprint-matching server can determine that at least a subgroup ofdevices of that group have detected a mismatch between referencefingerprint data representing the modifiable content-segment and queryfingerprint data representing content received by at least the subgroupof content-presentation devices. The fingerprint-matching server canthen determine that at least the subgroup of content-presentationdevices are connected to tuner devices associated with the same contentdistributor (e.g., the same MVPD, and perhaps additionally in the samegeographic area) and, in response to this determination, thefingerprint-matching server can performing an action, such as an actionthat facilitates at least the subgroup of devices continuing or abortingtheir respective content-modification operations.

With the disclosed methods and systems, the content-modification systemis advantageously given the ability to exercise more control over whatto do in the event of content-modification attempts made by tunerdevices and associated content distributors. Further, the disclosedactions that the content-presentation device, fingerprint-matchingserver, and/or other components of the content-modification system canperform in response to detecting such events can reduce the likelihoodthat the content-presentation devices' performances of thecontent-modification operations will be stopped partway through, thusadvantageously helping provide content-presentation devices—possibly alarge number (e.g., hundreds or thousands) of content-presentationdevices—with desirable user experiences. Still further, the predefinedtime period, when taken in to account in some embodiments, can providetolerance to a content-presentation device for the content-presentationdevice to determine whether the mismatch was detected due to the tunerdevice or due to another event (e.g., a channel-change event).

These and other advantages will be described in more detail in thefollowing sections.

II. Architecture A. Content-Modification System

FIG. 1 is a simplified block diagram of an example content-modificationsystem 100. The content-modification system 100 can include variouscomponents, such as a content-distribution system 102, acontent-presentation device 104, a fingerprint-matching server 106, acontent-management system 108, a data-management system 110, and/or asupplemental-content delivery system 112.

The content-modification system 100 can also include one or moreconnection mechanisms that connect various components within thecontent-modification system 100. For example, the content-modificationsystem 100 can include the connection mechanisms represented by linesconnecting components of the content-modification system 100, as shownin FIG. 1 .

In this disclosure, the term “connection mechanism” means a mechanismthat connects and facilitates communication between two or morecomponents, devices, systems, or other entities. A connection mechanismcan be or include a relatively simple mechanism, such as a cable orsystem bus, and/or a relatively complex mechanism, such as apacket-based communication network (e.g., the Internet). In someinstances, a connection mechanism can be or include a non-tangiblemedium, such as in the case where the connection is at least partiallywireless. In this disclosure, a connection can be a direct connection oran indirect connection, the latter being a connection that passesthrough and/or traverses one or more entities, such as a router,switcher, or other network device. Likewise, in this disclosure,communication (e.g., a transmission or receipt of data) can be a director indirect communication.

The content-modification system 100 and/or components thereof can takethe form of a computing system, an example of which is described below.

Notably, in practice, the content-modification system 100 is likely toinclude many instances of at least some of the described components. Forexample, the content-modification system 100 is likely to include manycontent-distribution systems and many content-presentation devices.

B. Computing System

FIG. 2 is a simplified block diagram of an example computing system 200.The computing system 200 can be configured to perform and/or can performone or more operations, such as the operations described in thisdisclosure. The computing system 200 can include various components,such as a processor 202, a data-storage unit 204, a communicationinterface 206, and/or a user interface 208.

The processor 202 can be or include a general-purpose processor (e.g., amicroprocessor) and/or a special-purpose processor (e.g., a digitalsignal processor). The processor 202 can execute program instructionsincluded in the data-storage unit 204 as described below.

The data-storage unit 204 can be or include one or more volatile,non-volatile, removable, and/or non-removable storage components, suchas magnetic, optical, and/or flash storage, and/or can be integrated inwhole or in part with the processor 202. Further, the data-storage unit204 can be or include a non-transitory computer-readable storage medium,having stored thereon program instructions (e.g., compiled ornon-compiled program logic and/or machine code) that, upon execution bythe processor 202, cause the computing system 200 and/or anothercomputing system to perform one or more operations, such as theoperations described in this disclosure. These program instructions candefine, and/or be part of, a discrete software application.

In some instances, the computing system 200 can execute programinstructions in response to receiving an input, such as an inputreceived via the communication interface 206 and/or the user interface208. The data-storage unit 204 can also store other data, such as any ofthe data described in this disclosure.

The communication interface 206 can allow the computing system 200 toconnect with and/or communicate with another entity according to one ormore protocols. Therefore, the computing system 200 can transmit datato, and/or receive data from, one or more other entities according toone or more protocols. In one example, the communication interface 206can be or include a wired interface, such as an Ethernet interface or aHigh-Definition Multimedia Interface (HDMI). In another example, thecommunication interface 206 can be or include a wireless interface, suchas a cellular or WI-FI interface.

The user interface 208 can allow for interaction between the computingsystem 200 and a user of the computing system 200. As such, the userinterface 208 can be or include an input component such as a keyboard, amouse, a remote controller, a microphone, and/or a touch-sensitivepanel. The user interface 208 can also be or include an output componentsuch as a display device (which, for example, can be combined with atouch-sensitive panel) and/or a sound speaker.

The computing system 200 can also include one or more connectionmechanisms that connect various components within the computing system200. For example, the computing system 200 can include the connectionmechanisms represented by lines that connect components of the computingsystem 200, as shown in FIG. 2 .

The computing system 200 can include one or more of the above-describedcomponents and can be configured or arranged in various ways. Forexample, the computing system 200 can be configured as a server and/or aclient (or perhaps a cluster of servers and/or a cluster of clients)operating in one or more server-client type arrangements, for instance.

As noted above, the content-modification system 100 and/or componentsthereof can take the form of a computing system, such as the computingsystem 200. In some cases, some or all these entities can take the formof a more specific type of computing system. For instance, in the caseof the content-presentation device 104, it can take the form of adesktop computer, a laptop, a tablet, a mobile phone, a television set,a set-top box, a television set with an integrated set-top box, a mediadongle, or a television set with a media dongle connected to it, amongother possibilities.

III. Example Operations

The content-modification system 100 and/or components thereof can beconfigured to perform and/or can perform one or more operations.Examples of these operations and related features will now be described.

As noted above, in practice, the content-modification system 100 islikely to include many instances of at least some of the describedcomponents. Likewise, in practice, it is likely that at least some ofdescribed operations will be performed many times (perhaps on a routinebasis and/or in connection with additional instances of the describedcomponents).

A. Operations Related to the Content-Distribution System TransmittingContent and the Content-Presenting Device Receiving and OutputtingContent

For context, general operations and examples related to thecontent-distribution system 102 transmitting content and thecontent-presentation device 104 receiving and outputting content willnow be described.

To begin, the content-distribution system 102 can transmit content(e.g., that it received from a content provider) to one or more entitiessuch as the content-presentation device 104. Content can be or includeaudio content and/or video content, for example. In some examples,content can take the form of a linear sequence of content segments(e.g., program segments and advertisement segments) or a portionthereof. In the case of video content, a portion of the video contentmay be one or more frames, for example.

The content-distribution system 102 can transmit content on one or morechannels (sometimes referred to as stations or feeds). As such, thecontent-distribution system 102 can be associated with a single channelcontent distributor or a multi-channel content distributor such as amulti-channel video program distributor (MVPD).

The content-distribution system 102 and its means of transmission ofcontent on the channel to the content-presentation device 104 can takevarious forms. By way of example, the content-distribution system 102can be or include a cable-television head-end that is associated with acable-television provider and that transmits the content on the channelto the content-presentation device 104 through hybrid fiber/coaxialcable connections. As another example, the content-distribution system102 can be or include a satellite-television head-end that is associatedwith a satellite-television provider and that transmits the content onthe channel to the content-presentation device 104 through a satellitetransmission. As yet another example, the content-distribution system102 can be or include a television-broadcast station that is associatedwith a television-broadcast provider and that transmits the content onthe channel through a terrestrial over-the-air interface to thecontent-presentation device 104. In these and other examples, thecontent-distribution system 102 can transmit the content in the form ofan analog or digital broadcast stream representing the content.

The content-presentation device 104 can receive content from one or moreentities, such as the content-distribution system 102. In one example,the content-presentation device 104 can select (e.g., by tuning to) achannel from among multiple available channels, perhaps based on inputreceived via a user interface, such that the content-presentation device104 can receive content on the selected channel.

In some examples, the content-distribution system 102 can transmitcontent to the content-presentation device 104, which thecontent-presentation device 104 can receive, and therefore thetransmitted content and the received content can be the same. However,in other examples, they can be different, such as where thecontent-distribution system 102 transmits content to thecontent-presentation device 104, but the content-presentation device 104does not receive the content and instead receives different content froma different content-distribution system.

The content-presentation device 104 can also output content forpresentation. As noted above, the content-presentation device 104 cantake various forms. In one example, in the case where thecontent-presentation device 104 is a television set (perhaps with anintegrated set-top box and/or media dongle), outputting the content forpresentation can involve the television set outputting the content via auser interface (e.g., a display device and/or a sound speaker), suchthat it can be presented to an end-user. As another example, in the casewhere the content-presentation device 104 is a set-top box or a mediadongle, outputting the content for presentation can involve the set-topbox or the media dongle outputting the content via a communicationinterface (e.g., an HDMI interface), such that it can be received by atelevision set and in turn output by the television set for presentationto an end-user.

As such, in various scenarios, the content-distribution system 102 cantransmit content to the content-presentation device 104, which canreceive and output the content for presentation to an end-user. In somesituations, even though the content-presentation device 104 receivescontent from the content-distribution system 102, it can be desirablefor the content-presentation device 104 to perform acontent-modification operation so that the content-presentation device104 can output for presentation alternative content instead of at leasta portion of that received content.

For example, in the case where the content-presentation device 104receives a linear sequence of content segments that includes a givenadvertisement segment positioned somewhere within the sequence, it canbe desirable for the content-presentation device 104 to replace thegiven advertisement segment with a different advertisement segment thatis perhaps more targeted to the end-user (i.e., more targeted to theend-user's interests, demographics, etc.). As another example, it can bedesirable for the content-presentation device 104 to overlay on thegiven advertisement segment, overlay content that enhances the givenadvertisement segment in a way that is again perhaps more targeted tothe end-user. The described content-modification system 100 canfacilitate providing these and other related features.

As noted above, in one example, content can take the form of a linearsequence of content segments. As such, in one example, thecontent-distribution system 102 can transmit a linear sequence ofcontent segments. This is referred to herein as a “transmissionsequence.” Likewise, the content-presentation device 104 can receive alinear sequence of content segments. This is referred to herein as a“receipt sequence.” In line with the discussion above, the transmissionsequence and the receipt sequence can be the same or they can bedifferent.

FIG. 3 illustrates some examples of these concepts. In one example, thetransmission sequence is the TRANSMISSION SEQUENCE 302 shown in FIG. 3 .As shown, the TRANSMISSION SEQUENCE 302 includes a PROGRAM SEGMENT A,followed by an AD SEGMENT B, followed by an AD SEGMENT C.

Likewise, in one example, the receipt sequence is the RECEIPT SEQUENCE304 shown in FIG. 3 . In this example, the content-distribution system102 transmits the TRANSMISSION SEQUENCE 302 to the content-presentationdevice 104, which the content-presentation device 104 receives as theRECEIPT SEQUENCE 304, and therefore the TRANSMISSION SEQUENCE 302 andthe RECEIPT SEQUENCE 304 are the same. As such, as shown, the RECEIPTSEQUENCE 304 also includes the PROGRAM SEGMENT A, followed by the ADSEGMENT B, followed by the AD SEGMENT C.

In FIG. 3 , the transmission time of the TRANSMISSION SEQUENCE 302 andthe receipt time of the RECEIPT SEQUENCE 304 are shown by way of theirrelationship to a TIMELINE 350. Notably, the transmission time and thereceipt time are offset from each other due to a content-transmissiondelay, which is described in greater detail below.

As noted above, in some situations, even though the content-presentationdevice 104 receives content from the content-distribution system 102, itcan be desirable for the content-presentation device 104 to perform acontent-modification operation so that the content-presentation device104 can output for presentation alternative content instead of at leasta portion of that received content. For example, in the case where thecontent-presentation device 104 receives the receipt sequence, ratherthan outputting for presentation the receipt sequence, thecontent-presentation device 104 can output for presentation a modifiedversion of the receipt sequence instead. This is referred to herein as a“modified sequence.”

For example, in the case where the receipt sequence includes a givenadvertisement segment positioned somewhere within the receipt sequence,it can be desirable for the content-presentation device 104 to replacethe given advertisement segment with a different advertisement segmentthat is perhaps more targeted to the end-user (i.e., more targeted tothe end-user's interests, demographics, etc.), thereby resulting in amodified sequence that the content-presentation device 104 can outputfor presentation.

To illustrate this, in one example, the modified sequence is the FIRSTMODIFIED SEQUENCE 306 shown in FIG. 3 . As shown, the FIRST MODIFIEDSEQUENCE 306 includes the PROGRAM SEGMENT A, followed by the AD SEGMENTD (which replaced the AD SEGMENT B), followed by the AD SEGMENT C.

As another example, it can be desirable for the content-presentationdevice 104 to overlay on the given advertisement segment, overlaycontent that enhances the given advertisement segment in a way that isagain perhaps more targeted to the end-user, thereby resulting in amodified sequence that the content-presentation device 104 can outputfor presentation.

To illustrate this, in another example, the modified sequence is theSECOND MODIFIED SEQUENCE 308 shown in FIG. 3 . As shown, the SECONDMODIFIED SEQUENCE 308 includes the PROGRAM SEGMENT A, followed by the ADSEGMENT B′ (which is the AD SEGMENT B modified with overlay content),followed by the AD SEGMENT C.

Other portions of FIG. 3 will be described later in this disclosure asrelated concepts are introduced and described.

Moving on in view of the context provided above, FIGS. 4A, 4B, 4C, 4D,4E, and 4F, collectively make up a table showing example time-periodsand corresponding operations that can be performed in connection withthe content-modification system 100. These and other related operationswill now be described.

B. Operations Related to the Content-Distribution System TransmittingFirst Content on a Channel

During a time-period T1, the content-distribution system 102 cantransmit content on a channel to the content-presentation device 104.This content is referred to herein as “first content.” In one example,the first content is the FIRST CONTENT 310 shown in FIG. 3 .

During a time-period T2, the content-distribution system 102 cangenerate fingerprint data representing the first content. Thisfingerprint data is referred to herein as “first fingerprint data.” Thecontent-distribution system 102 can generate the first fingerprint datausing any content fingerprinting process now known or later developed.An example fingerprint generation technique is described in U.S. Pat.No. 9,495,451 issued Nov. 15, 2016, the entirety of which is herebyincorporated by reference herein. The content-distribution system 102can generate first fingerprint data at a given rate, such as at the rateof one fingerprint per frame of the first content. The first fingerprintdata can be or include some or all of these generated fingerprints.

The content-distribution system 102 can access the first content atvarious points within the content-distribution system 102. As oneexample, the content-distribution system 102 can access the firstcontent after it is output by a distribution amplifier within thecontent-distribution system 102.

Also during the time-period T2, the content-distribution system 102 cangenerate metadata associated with the first content and/or the firstfingerprint data. This metadata is referred to herein as “firstmetadata.” In one example, the first metadata can be or include atransmission time-stamp, which represents a time-point at which thecontent-distribution system 102 transmitted the first content. Thecontent-distribution system 102 can determine the transmissiontime-stamp in various ways, such as based on a time clock that issynchronized to a reference clock.

As another example, the first metadata can be or include a channelidentifier, which identifies the channel on which thecontent-distribution system 102 is transmitting the first content. Thecontent-distribution system 102 can determine the channel identifier invarious ways such as based on mapping data that maps thecontent-distribution system 102 and/or physical inputs and/or outputswithin the content-distribution system 102 to respective channelidentifiers. In one example, in the case where the content-distributionsystem 102 transmits content A on channel A, content B on channel B, andcontent C on channel C, the mapping data can specify which of threedifferent outputs (perhaps on three different distribution amplifiers)maps to which channel identifier, such that the content-distributionsystem 102 can determine the appropriate channel identifier for contentof a given channel.

As another example, the first metadata can be or include SCTE-104 data,a watermark, or a similar type of metadata, any of which can themselvesencode other metadata, such as a program identifier, an advertisementidentifier (e.g., an industry standard coding identification (ISCI)key), a program genre, or another type of textual or numeric metadata,for instance.

The content-distribution system 102 can associate the first fingerprintdata with the first metadata in various ways. For instance, in the casewhere the first fingerprint data includes multiple fingerprints witheach fingerprint representing a corresponding frame of the firstcontent, the content-distribution system 102 can associate eachfingerprint with a corresponding transmission time-stamp and/or withother corresponding first metadata.

During a time-period T3, the content-distribution system 102 cantransmit the first fingerprint data and the first metadata to thefingerprint-matching server 106. The content-distribution system 102 cantransmit the first fingerprint data and the first metadata at a giveninterval. For example, every two seconds, the content-distributionsystem 102 can transmit the first fingerprint data and the firstmetadata that it generated during that most recent two-secondtime-period.

C. Operations Related to the Content-Presentation Device ReceivingSecond Content

During a time-period T4, the content-presentation device 104 can receivecontent from the content-distribution system 102. This content isreferred to herein as “second content.” In one example, the secondcontent is the SECOND CONTENT 312 shown in FIG. 3 .

During a time-period T5, the content-presentation device 104 cangenerate fingerprint data representing the second content. Thisfingerprint data is referred to herein as “second fingerprint data.” Thecontent-presentation device 104 can generate the second fingerprint datausing any content fingerprinting process now known or later developed.The content-presentation device 104 can generate the second fingerprintdata at various rates, such as at the rate of one fingerprint per frameof the second content. The second fingerprint data can be or includesome or all of these generated fingerprints.

The content-presentation device 104 can access the second content atvarious points within the content-presentation device 104. As oneexample, the content-presentation device 104 can access the secondcontent as it is being received by an input buffer (e.g., an HDMIbuffer) of the content-presentation device 104. In anotherconfiguration, the content-presentation device 104 can access the secondcontent as it is being received by a display buffer of thecontent-presentation device 104. In this configuration, the secondcontent can therefore be content that the content-presentation device104 not only receives, but also outputs for presentation.

Also during the time-period T5, the content-presentation device 104 cangenerate metadata associated with the second content and/or the secondfingerprint data. This metadata is referred to herein as “secondmetadata.” As one example, the second metadata can be or include areceipt time-stamp, which represents a time-point at which thecontent-presentation device 104 received the second content. Thecontent-presentation device 104 can determine the receipt time-stamp invarious ways, such as based on a time clock that is synchronized to areference clock. As noted above, the content-presentation device 104 canaccess the second content at various points within thecontent-presentation device 104. In one example, the point at which thesecond content is accessed can be considered the “receipt” point forpurposes of determining the receipt time-stamp.

In practice, while the first metadata is likely to be or include achannel identifier, the second metadata is likely to not be nor includea channel identifier.

The content-presentation device 104 can associate the second fingerprintdata with the second metadata in various ways. For instance, where thesecond fingerprint data includes multiple fingerprints with eachfingerprint representing a corresponding frame of second content, thecontent-presentation device 104 can associate each second fingerprintwith a corresponding receipt time-stamp and/or other correspondingmetadata.

During a time-period T6, the content-presentation device 104 cantransmit the second fingerprint data and the second metadata to thefingerprint-matching server 106. The content-presentation device 104 cantransmit the second fingerprint data and the second metadata at a giveninterval. For example, every two seconds, the content-presentationdevice 104 can transmit the second fingerprint data and the secondmetadata that it generated during that most recent two-secondtime-period.

D. Operations Related to Identifying a Channel on which theContent-Presentation Device is Receiving the Second Content

During a time-period T7, the fingerprint-matching server 106 can receivethe first fingerprint data and the first metadata from thecontent-distribution system 102. As noted above, the first fingerprintdata represents the first content transmitted by thecontent-distribution system 102 on the channel. As noted above, thefirst metadata can, and for the purposes of this described example does,identify the channel. In this way, the first content can be consideredas content being transmitted on an identified channel.

During a time-period T8, the fingerprint-matching server 106 can receivethe second fingerprint data and the second metadata from thecontent-presentation device 104. As noted above, the second fingerprintdata represents the second content received by the content-presentationdevice 104. However, as noted above, the associated metadata may not,and for the purposes of this described example does not, identify thechannel. In this way, the second content can be considered as contentbeing received on an unidentified channel.

During a time-period T9, the fingerprint-matching server 106 can comparethe first fingerprint data and the second fingerprint data to determinewhether there is a match. In this disclosure, this type of matchattempt, namely a match attempt between (i) reference fingerprint datarepresenting content being transmitted on an identified channel and (ii)query fingerprint data representing content being received on anunidentified channel, is referred to herein as a “cold match attempt.”

During a time-period T10, based on the comparing, thefingerprint-matching server 106 can detect a match between the firstfingerprint data and the second fingerprint data. Thefingerprint-matching server 106 can compare and/or detect a matchbetween fingerprint data using any content fingerprint comparing andmatching technique now known or later developed. An example fingerprintcomparing and matching technique is described in U.S. Pat. No. 9,146,990issued Sep. 29, 2015, the entirety of which is hereby incorporated byreference herein.

To effectively compare the first fingerprint data and the secondfingerprint data, the fingerprint-matching server 106 may need toaccount for a content-transmission delay. For context, in the case wherethe content-distribution system 102 transmits a given frame of contenton a given channel at a time-point A, for various reasons, thecontent-presentation device 104 may not receive that frame until atime-point B that is later (e.g., ten seconds later) than the time-pointA. This type of delay is referred to herein as a “content-transmissiondelay.”

In one example, the time-point A, the time-point B, and thecontent-transmission delay can be the TIME-POINT A 314, the TIME-POINT B316, and the CONTENT-TRANSMISSION DELAY 318, respectively, shown FIG. 3. Note that FIG. 3 is for illustration purposes and is not necessarilyto scale at least with respect to time. In practice, the actual amountof content-transmission delay may be different from the amount shown.

To help the fingerprint-matching server 106 effectively compare thefirst fingerprint data with the second fingerprint data, thefingerprint-matching server 106 may need to account for such acontent-transmission delay. In one example, the fingerprint-matchingserver 106 can do this by comparing the first fingerprint data that itreceives at a receipt time-point with the second fingerprint data thatit receives during a time-period defined by a starting time-point and anending time-point. The starting time-point can be the receipt time-pointplus an offset representing an anticipated content-transmission delay(e.g., ten seconds), minus a tolerance a time-period (e.g., twoseconds). The ending time-point can be the receipt time-point plus theoffset (e.g., ten seconds), plus the tolerance a time-period (e.g., twoseconds). As such, in one example where the anticipatedcontent-transmission delay is 10 seconds, the fingerprint-matchingserver 106 can compare first fingerprint data that it receives at areceipt time-point with second fingerprint data that it receives duringa time-period between (i) the receipt time-point plus eight seconds and(ii) receipt time-point plus twelve seconds.

In some cases, the fingerprint-matching server 106 can determine acontent-transmission delay, which it can use to select an appropriateoffset for use in determining the starting and ending time-points, asdescribed above. The fingerprint-matching server 106 can determine thecontent-transmission delay in various ways. For example, after thefingerprint-matching server 106 detects a match based on a cold matchattempt, the fingerprint-matching server 106 can determine thecontent-transmission delay as a difference between the correspondingtransmission time-stamp (of the first metadata) and the correspondingreceipt time-stamp (of the second metadata), for example. Notably, thecontent-transmission delay can vary from channel to channel.

During a time-period T11, based on the detected match, thefingerprint-matching server 106 can identify the channel on which thesecond content is being received by the content-presentation device 104.In one example, the fingerprint-matching server 106 can identify thechannel based on the channel identifier metadata associated with thefirst fingerprint data used to detect the match.

Notably, in practice, since there are likely to be multiple potentialchannels on which the content-presentation device 104 is receiving thesecond content, the fingerprint-matching server 106 is likely to comparethe second fingerprint data with multiple instances of first fingerprintdata (each representing a different respective instance of first contenton a different respective channel), to determine which of those multipleinstances matches the second fingerprint data.

Also, in some cases, the fingerprint-matching server 106 can detect amatch between the second fingerprint data and each of multiple instancesof first fingerprint data (each representing a different respectiveinstance of first content on a different respective channel). This isreferred to herein as a “multimatch scenario” and can occur for variousreasons. For example, this can occur when the content-distributionsystem 102 is transmitting the same or similar content on more than onechannel at or about the same time. In this scenario, thefingerprint-matching server 106 can perform additional operations toidentity, from among the multiple channels associated with themultimatch scenario, on which specific channel the content-presentationdevice 104 is receiving the second content. The fingerprint-matchingserver 106 can do this using any channel multimatch disambiguationtechnique now known or later developed. An example channel multimatchdisambiguation technique is described in U.S. Pat. No. 9,992,533 issuedJun. 5, 2018, the entirety of which is hereby incorporated by referenceherein.

E. Operations Related to Determining Historical Content Consumption Data

During a time-period T12, the fingerprint-matching server 106 cangenerate metadata associated with the identified channel. For example,the metadata can be or include a channel identification time-stamp. Thefingerprint-matching server 106 can determine the channel identificationtime-stamp in various ways, such as based on a time clock that issynchronized to a reference clock. In another example, the metadata canbe or include a device identifier that identifies thecontent-presentation device 104 that is receiving content on theidentified channel. The fingerprint-matching server 106 can determinethe device identifier in various ways, such as by receiving it from thecontent-presentation device 104. In another example, thefingerprint-matching server 106 can receive data (e.g., deviceregistration data) from the content-presentation device 104 and can usemapping data to map the received data to determine the deviceidentifier.

During a time-period T13, the fingerprint-matching server 106 cantransmit an indication of the identified channel and the associatedmetadata to the data-management system 110.

During a time-period T14, the data-management system 110 can receive theindication of the identified channel and the associated metadata fromthe fingerprint-matching server 106.

The data-management system 110 can use the received indication of theidentified channel and the associated metadata, perhaps with other data,to determine when the content-presentation device 104 has receivedcontent on the identified channel, what specific content thecontent-presentation device 104 has received, etc. This type of data isreferred to herein as “historical content consumption data.”

As such, during a time-period T15, the data-management system 110 candetermine historical content consumption data associated with thecontent-presentation device 104.

F. Operations Related to the Content-Distribution System TransmittingThird Content

As noted above, the fingerprint-matching server 106 can identify thechannel on which the content-presentation device 104 is receiving thesecond content.

During a time-period T16, the content-distribution system 102 cantransmit content on the identified channel to the content-presentationdevice 104. This content is referred to herein as “third content.” Inone example, the third content is the THIRD CONTENT 320 shown in FIG. 3. In practice, the content-distribution system 102 is likely to transmitthe third content shortly after (e.g., immediately after or a fewseconds or minutes after) transmitting the first content.

During a time-period T17, the content-distribution system 102 cangenerate fingerprint data representing the third content. Thisfingerprint data is referred to herein as “third fingerprint data.”

Also during the time-period T17, the content-distribution system 102 cangenerate metadata associated with the third content and/or the thirdfingerprint data. This metadata is referred to herein as “thirdmetadata.” The content-distribution system 102 can also associate thethird fingerprint data with the third metadata.

During a time-period T18, the content-distribution system 102 cantransmit the third fingerprint data and the third metadata to thefingerprint-matching server 106.

The content-distribution system 102 can transmit the third content,generate the third fingerprint data, generate the third metadata,associate the third fingerprint data with the third metadata, andtransmit the third fingerprint data and the third metadata in variousways, such as ways that are the same as or similar to those describedabove in connection with transmitting the first content, generating thefirst fingerprint data, generating the first metadata, associating thefirst fingerprint data with the first metadata, and transmitting thefirst fingerprint data and the first metadata.

G. Operations Related to the Content-Management System Receiving aModifiable Content-Segment

During a time-period T19, the content-management system 108 can receivecontent in the form of a content segment that has been identified as acandidate to be modified. This content is referred to herein as a“modifiable content-segment” or “fourth content.” In one example, themodifiable content-segment is the MODIFIABLE CONTENT-SEGMENT shown inFIG. 3 .

The modifiable content-segment can take various forms. For example, themodifiable content-segment can be an advertisement segment (e.g., acommercial) or a program segment. As such, in one example, themodifiable content-segment can be an advertisement segment that has beenidentified as a candidate to be modified, perhaps by way of beingreplaced with a different advertisement segment, and/or by way of havingcontent overlaid thereon.

In one example, a user, perhaps associated with the content-distributionsystem 102, can facilitate uploading the modifiable content-segment tothe content-management system 108, such that the content-managementsystem 108 can receive it in this way.

During a time-period T20, the content-management system 108 can generatefingerprint data representing the modifiable content-segment. Thisfingerprint data is referred to herein as “fourth fingerprint data.” Thecontent-management system 108 can generate the fourth fingerprint datausing any fingerprint generation technique now known or later developed.The content-management system 108 can generate the fourth fingerprintdata at a given rate, such as at the rate of one fingerprint per frameof the fourth content. The fourth fingerprint data can be or includesome or all of these generated fingerprints.

Also during the time-period T20, the content-management system 108 cangenerate metadata associated with the modifiable content-segment and/orthe fourth fingerprint data. This metadata is referred to herein as“fourth metadata.” As one example, the fourth metadata can be or includea duration of the modifiable content-segment. The content-managementsystem 108 can determine the duration in various ways, such as based onthe fingerprint generation process. For example, in the case where thecontent-management system 108 generating the fourth fingerprint datainvolves generating one fingerprint per frame, where the modifiablecontent-segment has a frame rate of 30 frames per second, and where thefingerprinting process results in 300 fingerprints being generated, thecontent-management system 108 can deduce that the modifiablecontent-segment has a duration of ten seconds. The metadata can also beor include other information about the modifiable content-segment, suchas a content segment identifier, a title, and/or specifics aboutpermissible ways in which the modifiable content-segment can bemodified, etc.

During a time-period T21, the content-management system 108 can transmitthe fourth fingerprint data and the fourth metadata to thefingerprint-matching server 106.

In practice, the content-management system 108 is likely to receive manymodifiable content-segments. In such situations, the content-managementsystem 108 can perform one or more of the operations described above, asappropriate for each of the many received modifiable content-segments.As such, the content-management system 108 can transmit many instancesof fourth fingerprint data, each corresponding with a differentrespective modifiable content-segment, to the fingerprint-matchingserver 106.

H. Operations Related to the Fingerprint-Matching Server Identifying anUpcoming Content-Modification Opportunity on the Identified Channel

During a time-period T22, the fingerprint-matching server 106 canreceive the third fingerprint data and the third metadata from thecontent-distribution system 102. As noted above, the third fingerprintdata represents the third content transmitted by thecontent-distribution system 102 on the identified channel.

During a time-period T23, the fingerprint-matching server 106 canreceive the fourth fingerprint data and the fourth metadata from thecontent-management system 108. As noted above, the fourth fingerprintdata represents the modifiable content-segment.

During a time-period T24, the fingerprint-matching server 106 cancompare at least a portion of the third fingerprint data with at least aportion of the fourth fingerprint data to determine whether there is amatch.

During a time-period T25, based on the comparing, thefingerprint-matching server 106 can detect a match between the at leasta portion of the third fingerprint data and the at least a portion ofthe fourth fingerprint data. The fingerprint-matching server 106 cancompare and/or detect a match between fingerprint data using any contentfingerprint comparing and matching process now known or later developed.

During a time-period T26, based on the detected match, thefingerprint-matching server 106 can determine that at least a portion ofthe modifiable content-segment is included within the third content, andtherefore can identify an upcoming content-modification opportunity onthe identified channel. For example, the fingerprint-matching server 106can determine that at least a beginning portion of the MODIFIABLECONTENT-SEGMENT is included within the THIRD CONTENT 320, as shown inFIG. 3 , and therefore can identify an upcoming content-modificationopportunity.

As noted above, the fingerprint-matching server 106 can receive thirdmetadata, which can be the same as or similar to the first metadata. Assuch, the third metadata can be or include a transmission time-stampand/or a channel identifier, for example. However, the third metadatacan also be or include a position of at least a portion of themodifiable content-segment within the third content. In one example, themetadata can specify this using a starting frame marker and an endingframe marker, each corresponding with a respective frame of the thirdcontent. The fingerprint-matching server 106 can determine the startingframe marker and the ending frame marker based on the matching.

Notably, in practice, since there are likely to be multiple potentialmodifiable content-segments where portions thereof could be includedwithin the third content, the fingerprint-matching server 106 is likelyto compare at least a portion of the third fingerprint data with atleast a portion of multiple instances of fourth fingerprint data (eachrepresenting a different respective instance of a modifiablecontent-segment), to determine which of those multiple instances of thefourth fingerprint data has a portion that matches the at least aportion of the third fingerprint data.

I. Operations Related to Preparing the Content-Presentation Device toPerform a Content-Modification Operation in Connection with theIdentified Upcoming Content-Modification Opportunity

During a time-period T27, based on the detected match, thefingerprint-matching server 106 can transmit the third fingerprint dataand the third metadata to the content-presentation device 104 data tofacilitate preparing the content-presentation device 104 to perform acontent-modification operation in connection with the identifiedupcoming content-modification opportunity.

During a time-period T28, the content-presentation device 104 canreceive the third fingerprint data and the third metadata from thefingerprint-matching server 106.

During a time-period T29, the content-presentation device 104 canreceive content on the identified channel. This content is referred toherein as “fifth content.” In one example, the fifth content is theFIFTH CONTENT 324 shown in FIG. 3 .

For various reasons (e.g., due to a transmission delay associated withtransmitting fingerprint data and metadata being shorter that thecontent-transmission delay), the content-presentation device 104 canreceive the third fingerprint data and the third metadata from thefingerprint-matching server 106 before receiving the fifth content fromthe content-distribution system 102. In this way, thecontent-presentation device 104 can receive fingerprint datarepresenting content that the content-presentation device 104 isexpecting to receive shortly thereafter, and that thecontent-presentation device should actually receive shortly thereafterunless an interruption event (e.g., a channel-change event) occurs.

In practice, similar to how the content-distribution system 102 islikely to transmit the third content shortly after (e.g., immediatelyafter or a few seconds or minutes after) transmitting the first content,the content-presentation device 104 is likely to receive the fifthcontent shortly after (e.g., immediately after or a few seconds orminutes after) receiving the second content.

During a time-period T30, the content-presentation device 104 can outputfor presentation at least a portion of the fifth content. For example,referring to FIG. 3 , the content-presentation device can output forpresentation the portion of the FIFTH CONTENT 324 that is the endportion of the PROGRAM SEGMENT A.

As noted above, in some situations, even though the content-presentationdevice 104 receives content from the content-distribution system 102, itcan be desirable for the content-presentation device 104 to perform acontent-modification operation so that the content-presentation device104 can output for presentation alternative content instead of at leasta portion of the received content.

As such, even though the content-presentation device 104 receives thefifth content and outputs for presentation at least a portion of thefifth content, it can be desirable for the content-presentation device104 to perform a content-modification operation so that thecontent-presentation device 104 can also output for presentationalternative content instead of at least another portion (e.g., theremaining portion) of the fifth content. For example, referring to FIG.3 , it can be desirable for the content-presentation device 104 toreplace at least a portion of the AD SEGMENT B with at least a portionof a different advertisement segment that is perhaps more targeted tothe end-user. As another example, it can be desirable for thecontent-presentation device 104 to overlay on at least a portion of theAD SEGMENT B, overlay content that enhances at least a portion of the ADSEGMENT B in a way that is again perhaps more targeted to the end-user.

During a time-period T31, the content-presentation device 104 cangenerate fingerprint data representing the fifth content. Thisfingerprint data is referred to herein as “fifth fingerprint data.” Thecontent-presentation device 104 can generate the fifth fingerprint datausing any content fingerprinting process now known or later developed.The content-presentation device 104 can generate the fifth fingerprintdata at various rates, such as at the rate of one fingerprint per frameof the fifth content. The fifth fingerprint data can be or include someor all of these generated fingerprints.

Also during the time-period T31, the content-presentation device 104 cangenerate metadata associated with the fifth content and/or the fifthfingerprint data. This metadata is referred to herein as “fifthmetadata.”

The content-presentation device 104 can receive the fifth content,generate the fifth fingerprint data, generate the fifth metadata,associate the fifth fingerprint data with the fifth metadata in variousways, such as ways that are the same as or similar to those describedabove in connection with receiving the second content, generating thesecond fingerprint data, generating the second metadata, and associatingthe second fingerprint data with the second metadata.

As noted above, the content-presentation device 104 can receive thethird fingerprint data from the fingerprint-matching server 106 and cangenerate the fifth fingerprint data.

During a time-period T32, the content-presentation device 104 cancompare the third fingerprint data and the fifth fingerprint data todetermine whether there is a match.

During a time-period T33, based on the comparing, thecontent-presentation device 104 can detect a match between the thirdfingerprint data and the fifth fingerprint data. In this disclosure,this type of match attempt, namely a match attempt between (i) referencefingerprint data representing content transmitted by thecontent-distribution system 102 on an identified channel (at least basedon the most recent channel identification analysis), and (ii) queryfingerprint data representing content being received by thecontent-presentation device 104 on the same identified channel, isreferred to herein as a “hot match attempt.” The content-presentationdevice 104 can compare and/or detect a match between fingerprint datausing any content fingerprint comparing and matching process now knownor later developed.

During a time-period T34, based on the detected match, thecontent-presentation device 104 can determine a time-point at which theidentified upcoming modification opportunity starts. This is referred toherein as the “modification start-time.” In one example, themodification start-time is the MODIFICATION START-TIME 326 as shown FIG.3 .

In one example, the content-presentation device 104 can determine themodification start-time by starting with the transmission time-stampassociated with the starting frame marker (which, as described above,can be or be included in the third metadata) and adding thecontent-transmission delay to that transmission time-stamp, to arrive atthe modification start-time.

As another example, the content-presentation device 104 can determinethe modification start-time by first establishing a synchronous lockbetween the third content, the third fingerprint data, and/or the thirdmetadata on the one hand, and the fifth content, the fifth fingerprintdata, and/or the fifth metadata, on the other hand. Thecontent-presentation device 104 can establish the synchronous lock usingany synchronous lock technique now known or later developed. An examplesynchronous lock technique is described in U.S. Pat. No. 10,506,275issued Dec. 10, 2019, the entirety of which is hereby incorporated byreference herein. Another example synchronous lock technique isdescribed in U.S. Pat. App. Pub. No. 2020/0029108 published Jan. 23,2020, the entirety of which is hereby incorporated by reference herein.

The content-presentation device 104 can then determine the modificationstart-time by determining a time-period between (i) a current receipttime-stamp associated with a first portion of the fifth content that thecontent-presentation device 104 is currently receiving and (ii) based onthe synchronous lock, an anticipated receipt time-stamp associated witha second portion of the fifth content that is the start of themodifiable content-segment, and then adding the determined time-periodto the current receipt time-stamp, to arrive at the modificationstart-time.

Also during the time-period T34, based on the detected match, thecontent-presentation device 104 can determine a time-point at which theidentified upcoming modification opportunity ends. This is referred toherein as the “modification end-time.” In one example, the modificationend-time is the MODIFICATION END-TIME 328 as shown FIG. 3 .

In one example, the content-presentation device 104 can determine themodification end-time by starting with the modification start-time andadding the duration of the modifiable content-segment (which, asdescribed above, can be or be included in the fourth metadata) to themodification start-time, to arrive at the modification end-time.

Notably, if the content-presentation device 104 performs a hot matchattempt and does not detect a match, the content-presentation device 104can determine that the content-presentation device 104 is no longerreceiving content on the most recently identified channel. In response,the content-presentation device 104 can repeat one or more of theoperations described above so that the fingerprint-matching server 106can perform another cold match attempt, to attempt to identify thechannel again.

During a time-period T35, the content-presentation device 104 cantransmit a request for content for use in connection with performing thecontent-modification operation, to the content-management system 108.This content is referred to herein as “supplemental content.” In oneexample, the content-presentation device 104 can transmit the requestbefore the modification start-time (e.g., ten seconds before). In somecases, the request can include selection criteria for the supplementalcontent, which the content-presentation device 104 can determine basedon the third metadata that the content-presentation device 104 receivesfrom the fingerprint-matching server 106, for instance.

For example, the selection criteria can specify a requested type ofcontent (e.g., a replacement content segment or overlay content),duration (e.g., 15 seconds, 30 seconds, or 60 seconds), aspect ratio(e.g., 4:3 or 16:9), and/or resolution (e.g., 720p or 1080p).

During a time-period T36, the content-management system 108 can receivethe request and use it as a basis to select supplemental content fromamong multiple supplemental content items that are available forselection. In some cases, the content-management system 108 can receiveand consider various data to help inform which supplemental content toselect. For example, the content-management system 108 can receivehistorical content consumption data for the content-presentation device104 from the data-management system 110 and/or the content-managementsystem 108 can receive demographic data from a demographic dataprovider. The content-management system 108 can then use at least thereceived historical content consumption data and/or the receiveddemographic data as a basis to select the supplemental content.

The content-management system 108 can cause the selected supplementalcontent to be transmitted to the content-presentation device 104. In oneexample, the content-management system 108 can do this by communicatingwith a supplemental-content delivery system 112 that can host thesupplemental content. The supplemental-content delivery system 112 cantake various forms and can include various components, such as a contentdistribution network (CDN).

During a time-period T37, the content-management system 108 can transmita request for a link (e.g., a Uniform Resource Identifier (URI) or aUniform Resource Locator (URL)) pointing to the hosted supplementalcontent, to the supplemental-content delivery system 112.

During a time-period T38, the supplemental-content delivery system 112can receive and respond to the request for the link by transmitting therequested link to the content-management system 108.

During a time-period T39, the content-management system 108 can then inturn transmit the link to the content-presentation device 104.

During a time-period T40, the content-presentation device 104 canreceive the link, which it can use to retrieve the supplemental contentfrom the supplemental-content delivery system 112, such that thecontent-presentation device 104 can use the retrieved supplementalcontent in connection with performing the content-modificationoperation. In one example, the content-presentation device 104 canretrieve the supplemental content and store the supplemental content ina data-storage unit of the content-presentation device 104.

As such, in some examples, the content-presentation device 104 canreceive the modifiable content-segment from one source (e.g., thecontent-distribution system 102), and the supplemental content fromanother source (e.g., the supplemental-content delivery system 112).These segments can be transmitted to, and received by, thecontent-presentation device 104 in different ways. For example, thecontent-distribution system 102 can transmit, and thecontent-presentation device 104 can receive, the modifiablecontent-segment as a broadcast stream transmission, whereas thesupplemental-content delivery system 112 can transmit, and thecontent-presentation device 104 can receive, the supplemental content asan over-the-top (OTT) transmission. In this context, in one example, thecontent-distribution system 102 can receive the modifiablecontent-segment via one communication interface (e.g., an HDMIinterface), and the content-presentation device 104 can receive thesupplemental content via a different communication interface (e.g., anEthernet or WI-FI interface).

J. Operations Related to the Content-Presentation Device Performing aContent-Modification Operation

At a time-period T41, the content-presentation device 104 can performthe content-modification operation. The content-presentation device 104can do this in various ways, perhaps depending on the type ofcontent-modification operation to be performed.

In one example, the content-presentation device 104 performing acontent-modification operation can involve the content-presentationdevice 104 modifying the modifiable content-segment by replacing it withsupplemental content. This is referred to herein as a“content-replacement operation.” For example, in this scenario, thecontent-presentation device 104 can receive a linear sequence of contentsegments that includes the modifiable content-segment and the associatedmetadata, and can also receive the supplemental content segment, asdescribed above. The content-presentation device 104 can output forpresentation the sequence of content segments up until the modificationstart-time (which corresponds to the start of the modifiablecontent-segment), at which time the content-presentation device 104 canswitch to outputting for presentation the supplemental content instead.Then, at the modification end-time (which corresponds to the end of themodifiable content-segment), the content-presentation device 104 canswitch back to outputting for presentation the content that follows inthe linear sequence of content segments (or perhaps to other content,such as additional supplemental content that is replacing anothermodifiable content-segment).

In one example, the operation of the content-presentation device 104switching from outputting the sequence of content segments to outputtingthe supplemental content can involve using various buffers of thecontent-presentation device 104. For example, this can involve thecontent-presentation device 104 switching from using first data in afirst input buffer where the sequence of content segments is beingreceived to using second data in a second input buffer where thesupplemental content is being received, to populate a display buffer.

As such, according to one example as illustrated in FIG. 3 , byperforming a content replacement operation, the content-presentationdevice 104 can replace the AD SEGMENT B with the AD SEGMENT D. As aresult, rather than outputting for presentation the RECEIPT SEQUENCE304, the content-presentation device can instead output for presentationthe FIRST MODIFIED SEQUENCE 306.

In another example, the content-presentation device 104 performing acontent-modification operation can involve the content-presentationdevice 104 modifying a modifiable content-segment by overlaying on themodifiable content-segment, overlay content (referred to herein as a“content overlay operation”). For example, in this scenario, thecontent-presentation device 104 can again receive a linear sequence ofcontent segments that includes the modifiable content-segment and theassociated metadata, and the content-presentation device 104 can alsoreceive the supplemental content, as described above.

The content-presentation device 104 can then output for presentation themodifiable content-segment as it ordinarily would, except that startingat the modification start-time, the content-presentation device 104 canstart overlaying the supplemental content on the modifiablecontent-segment. The content-presentation device 104 can continueoverlaying the supplemental content until the modification end-time. Inthis way, the content-presentation device 104 can overlay thesupplemental content during at least some temporal portion of themodifiable content-segment.

In one example, the operation of the content-presentation device 104overlaying supplemental content on the modifiable content-segment caninvolve using various buffers of the content-presentation device 104.For example, this can involve the content-presentation device 104 usinga portion of first data in a first input buffer where the sequence ofcontent segments is being received together with second data in a secondinput buffer where the supplemental content is being received, for thepurposes of populating a display buffer. In this way, thecontent-presentation device can combine relevant portions of themodifiable content-segment (i.e., all portions except those representingregion where the supplemental content is to be overlaid) together withthe supplemental content to be used as an overlay, to create the desiredmodifiable content-segment plus the supplemental content overlaidthereon.

As such, according to one example as illustrated in FIG. 3 , byperforming a content overlay operation, the content-presentation device104 can overlay supplemental content on the AD SEGMENT B, therebymodifying it to AD SEGMENT B′. As a result, rather than outputting forpresentation the RECEIPT SEQUENCE 304, the content-presentation devicecan instead output for presentation the SECOND MODIFIED SEQUENCE 308.

In some examples, the content-presentation device 104 performs anentirety of a content-modification operation (e.g., a replacement oroverlay action, as described above) while tuned to the channel on whichthe RECEIPT SEQUENCE 304 is received, unless an intervening event occursthat might cause the content-modification operation (or the output ofthe resulting content) to be stopped, such as a channel change or apowering down of the content-presentation device 104 and/or associateddisplay device. Thus, the FIRST MODIFIED SEQUENCE 306 or SECOND MODIFIEDSEQUENCE 308 can be output on the same channel on which thecontent-presentation device 104 is tuned—that is, the channel on whichthe modifiable content-segment is received and on which thecontent-modification opportunity was identified.

K. Tracking and Reporting Operation-Related Data

To help facilitate performance of various operations such as thecontent-presentation device 104 performing a content-modificationoperation and to help allow for the tracking and reporting of suchoperations, the content-modification system 100 and/or componentsthereof can track and report various operation-related data at varioustimes and in various ways.

As just a few illustrative examples, responsive to certain operationsbeing performed, such as those described herein, thefingerprint-matching server 106, the content-presentation device 104,and/or another entity can generate, store, and/or transmit messages thatindicate (i) that a modifiable content-segment has been identified, (ii)that a channel has been identified/confirmed (perhaps based on a matchdetected as a result of a cold or hot match attempt), (iii) that anupcoming content-modification opportunity on the identified channel hasbeen identified, (iv) that supplemental content has been requested, (v)that supplemental content has been received, (vi), that acontent-modification operation has started, (vii) that acontent-modification operation has ended, and/or (viii) that a scheduledcontent-modification operation was aborted and/or not performed for anygiven reason. In some cases, these messages can include other metadatarelated to these operations. For example, the metadata can specifyrelevant timing information, device identifiers, channel identifiers,content segment identifiers, etc.

L. Watermark-Based Techniques

Although this disclosure has described the content-modification system100 using fingerprint-based technology to perform various operations andto provide various features, in some examples, the content-modificationsystem 100 can use watermark-based techniques instead of, or in additionto, fingerprint-based techniques, to perform these and other operationsand to provide these and other features.

For example, as an alternative to the fingerprint-based techniquedescribed above in which the fingerprint-matching server 106 identifiesthe channel on which the second content is being received by thecontent-presentation device 104, the content-distribution system 102 oranother entity can insert a channel identifier in the form of awatermark into the second content, such that the fingerprint-matchingserver 106, the content-presentation device 104, or another entity canextract the channel identifier and use it to identify the channel onwhich the second content is being received by the content-presentationdevice 104.

In this context, the content-modification system 100 can employ anywatermark technique now known or later developed.

M. Additional Operations Related to Performing a Content-ModificationOperation

In some situations, the content-management system 108 can use broadcastschedule data to facilitate the content-presentation device 104performing certain operations. These acts and related features will nowbe described.

In one example configuration, the content-management system 108 canaccess broadcast schedule data associated with a channel. In someconfigurations, this can involve the content-management system 108accessing an industry standard coding identification (ISCI) key and/or ahouse identifier. The broadcast schedule data can be or include programlog files (e.g., schedules that list when certain advertisements orother content will be broadcast) received from a content provider (e.g.,a television programmer). In some examples, the broadcast schedule datacan be accessed via a schedule notification interface such as Society ofCable Telecommunications Engineers 224 (SCTE 224) messaging. Further, insome examples, the broadcast schedule data can be accessed via directintegration of elements of the content-modification system 100 with abroadcast playout system associated with a content provider.

The content-management system 108 can use the accessed broadcastschedule data to identify an upcoming content-modification opportunityon the channel. In one example, this can involve the content-managementsystem 108 (i) accessing first broadcast schedule data associated withthe channel, (ii) extracting, from among the accessed first broadcastschedule data associated with the channel, second broadcast scheduledata related to one or more broadcast-related events scheduled within apredefined upcoming duration, and (iii) using the extracted secondbroadcast schedule data to identify the upcoming content-modificationopportunity on the channel.

In another example, the content-management system 108 using the accessedbroadcast schedule data to identify an upcoming content-modificationopportunity on the channel can involve the content-management system 108(i) detecting a match between the accessed broadcast schedule data andreference data that corresponds with a reference modifiable contentsegment, and (ii) identifying the upcoming content-modificationopportunity on the channel based at least in part on the detected match.

Responsive to identifying the upcoming-content-modification opportunityon the channel, the content-management system 108 can identify thecontent-presentation device 104 tuned to the channel. Thecontent-management system 108 can cause supplemental content to betransmitted to the identified content-presentation device 104, tofacilitate the content-presentation device 104 performing acontent-modification operation related to the upcomingcontent-modification opportunity on the channel. The content-managementsystem 108 can also transmit to the identified content-presentationdevice 104 reference fingerprint data to further facilitate thecontent-presentation device 104 performing the content-modificationoperation related to the upcoming content-modification opportunity onthe channel.

The content-presentation device 104 can receive the supplemental contentand can use the received supplemental content in connection withperforming a content-modification operation related to the upcomingcontent-modification opportunity on the channel.

In practice, these features can be implemented in connection withmultiple content presentation devices. In one configuration, responsiveto identifying the upcoming content-modification opportunity on thechannel, the content-management system 108 can identify a group ofmultiple content-presentation devices tuned to the channel. For eachcontent-presentation device in the identified group, thecontent-management system 108 can then cause respective supplementalcontent to be transmitted to that content-presentation device, tofacilitate that content-presentation device performing a respectivecontent-modification operation related to the upcomingcontent-modification opportunity on the channel. The content-managementsystem 108 (or another entity such as the fingerprint-matching server106) can also transmit to that content-presentation device respectivereference fingerprint data to further facilitate thatcontent-presentation device performing the respectivecontent-modification operation related to the upcomingcontent-modification opportunity on the channel.

In some instances, the content-presentation device 104 can determinethat it did not receive the modifiable-content segment related to thecontent-modification opportunity, which can happen due to broadcastschedule slippage or because another entity (e.g., a set-top box)already replaced the modifiable-content segment with supplementalcontent, for instance. The content-presentation device 104 can determinethis in various ways (e.g., based on compared fingerprint data).Responsive to detecting this, the content-presentation device 104 canrefrain from or stop performing (e.g., abort) the content-modificationoperation. However, as another option, the content-presentation device104 can replace this supplemental content with other supplementalcontent.

N. Content-Modification Operations Performed by a Tuner Device Connectedto a Content-Presentation Device

In line with the discussion above, when there is an upcomingcontent-modification opportunity, a content-presentation device can bescheduled to replace a modifiable content-segment with firstsupplemental content at a modification start-time. However, before thescheduled modification start-time and at the instruction of an MVPD, atuner device connected to the content-presentation device might replacethe modifiable content-segment with second supplemental content,different from the first supplemental content. Thus, the linear sequenceof content segments that the content-presentation device receives fromthe tuner device can include the second supplemental content instead ofthe modifiable content-segment that the content-presentation device isexpecting to receive.

FIG. 5 is a sequence diagram depicting an example of this situation. Thetuner device 500 can receive an instruction from MVPD 502 to replace anupcoming Modifiable Advertisement X, and can carry out the replacement(e.g., with Advertisement Y) upon receipt of a linear sequence ofcontent segments (including Modifiable Advertisement X) from thecontent-distribution system 102. The content-presentation device 104thus receives the linear sequence of content segments, but withAdvertisement Y instead of Modifiable Advertisement X. By that point intime, however, the content-presentation device 104 may have already senta request to the content-management system 108 (not shown) forsupplemental content for use in replacing Modifiable Advertisement X ata modification start-time, and may have already received Advertisement Zin response to the request.

As discussed above, the content-presentation device's 104 might beginreplacing Advertisement Y with Advertisement Z at the modificationstart-time. But as a result of the aforementioned events, thecontent-presentation device 104 can determine a short time (e.g., a fewseconds) after the modification start-time that there is a mismatchbetween the reference fingerprint data representing ModifiableAdvertisement X and the query fingerprint data representing the contentreceived from the tuner device 500 (i.e., Advertisement Y). In responseto detecting the mismatch, the content-presentation device 104 can stopperforming the content-replacement operation, which can cause thedisplay of Advertisement Z to abruptly end after a few seconds worth offrames, thus resuming display of Advertisement Y, thereby resulting inan undesirable user experience.

As noted above, in some situations, the content-presentation device 104might not stop performing the replacement operation and instead cancomplete the content-replacement operation, thus replacing AdvertisementY with Advertisement Z. However, this can be undesirable too in somesituations, such as for an advertiser associated with Advertisement Y.

O. Operations Related to Detecting and Responding to a ContentModification Performed by a Tuner Device

The disclosed methods and systems address the above-noted issues and canadvantageously help the content-modification system 100 identifysituations in which the tuner device 500 has performed acontent-modification operation with higher confidence and respondaccordingly. The disclosed methods and systems can also advantageouslyimprove user experience during content-modification operations such ascontent-replacement operations.

Examples of the disclosed features and related features will now bedescribed. Although example operations will be described hereinprimarily as being performed by a content-presentation device 104 and afingerprint-matching server 106, other entities of thecontent-modification system 100, such as the content-management system108, could perform one or more of such operations in alternativeembodiments.

Furthermore, although example operations will be described hereinprimarily as involving performance of content-replacement operations bycontent-presentation devices and tuner devices, other types ofcontent-modification operations are possible as well, such ascontent-overlay operations. In addition, although example operationswill be described as primarily involving tuner devices associated withMVPDs, such tuner devices could be associated with other types ofcontent distributors.

As discussed above, the content-presentation device 104 can be scheduledto perform, at a modification start-time, a content-modificationoperation that comprises modifying a modifiable content-segment that thecontent-presentation device 104 is scheduled to receive.

At some point before the modification start-time, thecontent-presentation device can receive reference fingerprint datarepresenting the modifiable content-segment. For example, after a hotmatch is found, the fingerprint-matching server 106 can send, to thecontent-presentation device 104, reference fingerprint data representingcontent on the channel that the content-presentation device 104 is tunedto, and at least a portion of the reference fingerprint data canrepresent the modifiable content-segment. The content-presentationdevice 104 can also generate query fingerprint data representing contentreceived by the content-presentation device 104 from the tuner device500 connected to the content-presentation device 104. As noted above,the tuner device 500 can be a STB or other type of tuner device that isnot part of the content-modification system 100 and that is associatedwith an MVPD, such as MVPD 502. An example of such a tuner device can bea Comcast® STB.

In some examples, the content-modification operation can be acontent-replacement operation in which the content-presentation device104 is scheduled to replace the modifiable content-segment with firstsupplemental content that the content-presentation device 104 willrequest. If the tuner device 500 has performed a content replacementinstead, however, the query fingerprint data that thecontent-presentation device 104 generates can represent second,different supplemental content with which the tuner device 500 hasperformed a content-replacement operation or a content-overlay operationbefore the modification start-time. In other examples, thecontent-modification operation can be a content-overlay operation inwhich the content-presentation device 104 is scheduled to overlay firstsupplemental content over the modifiable content-segment and the queryfingerprint data can represent second, different supplemental contentwith which the tuner device 500 has performed a content-replacementoperation or a content-overlay operation before the modificationstart-time.

As further discussed above, the content-presentation device 104 can makea comparison of the received reference fingerprint data with thegenerated query fingerprint data. If the tuner device 500 has performeda content-modification operation at the instruction of MVPD 502, such asby replacing the modifiable content-segment with supplemental content(e.g., a replacement advertisement), the query fingerprint data mightnot match the received reference fingerprint data.

Thus, based on the comparison, the content-presentation device 104 maydetect, within a predefined time period after the modificationstart-time and during performance of the content-modification operation,a mismatch between the reference fingerprint data and the queryfingerprint data. A mismatch that is detected within the predefined timeperiod after the modification start-time and during performance of thecontent-modification operation will be hereinafter alternativelyreferred to as a “first mismatch.” In some examples, the predefined timeperiod can be a value in a range of 1 to 4 seconds. Other time periodsare possible as well.

The predefined time period can be a mechanism for distinguishing betweensituations in which the content-presentation device 104 performs a hotmatch attempt and does not detect a match because the tuner device 500has performed a content-modification operation before the modificationstart-time and situations in which the content-presentation device 104performs a hot match attempt and does not detect a match because thecontent-presentation device 104 is no longer receiving content on themost recently identified channel (e.g., due to a channel-change event).In the former situations, the content-presentation device 104 may bemore likely to detect a mismatch between query and referencefingerprints data within a short time period after the modificationstart-time, such within less than 5 seconds from the modificationstart-time, whereas, in the latter situations, the content-presentationdevice 104 may be more likely to detect a mismatch between query andreference fingerprint data after a longer time period from themodification start-time, such as after 5 seconds from the modificationstart-time or longer.

Thus, in response to the content-presentation device 104 detecting thefirst mismatch, the content-presentation device 104 can perform anaction (hereinafter alternatively referred to as the “first action,” todistinguish performance of this action from other actions describedherein). That is, the content-presentation device 104 (and, likewise,one or more other computing systems of the content-modification system100, as described in more detail below) can be configured to perform oneor more particular first actions based at least in part on the firstmismatch having been detected. Examples of these first actions will bedescribed in more detail below.

Furthermore, because the disclosed methods and systems distinguishbetween situations in which a mismatch is detected because a tunerdevice has performed a content-modification operation before themodification start-time and situations in which a mismatch is detecteddue to another type of occurrence such as a channel-change event, amismatch that was detected within the predefined time period (and isthus because the tuner device 500 has performed a content-modificationoperation at the instruction of a content distributor) can beinterpreted by the content-presentation device 104 and/or othercomputing systems of the content-modification system 100 as a mismatchthat was not the result of a channel-change event.

In some examples, if the content-presentation device 104 remains tunedto the channel before the modification start-time, thecontent-presentation device 104 can, at a predefined time-point beforethe modification start-time (e.g., a few seconds or less), generate andsend to the fingerprint-matching server 106 a message (e.g., a clipstart indication) that indicates to the fingerprint-matching server 106that the content-presentation device 104 has been tuned to the channelup to right before the modification start-time. In such examples, thecontent-presentation device 104 can be configured to perform the firstaction in accordance with the disclosed methods and systems further inresponse to generating and sending the message.

Example first actions that can be performed in response to at least thedetection of the first mismatch within the predefined time period (e.g.,within one second) after the modification start-time and duringperformance of the content-modification operation will now be describedin more detail. The first action that is performed can be or include oneor more of the following first actions.

As an example, the act of performing the first action can be or includecontinuing performance of the content-modification operation until thecontent-modification operation is complete. That is, thecontent-presentation device 104 can override the result of the tunerdevice's 500 content-modification operation. For instance, if the tunerdevice 500 replaced the modifiable content-segment with a firstadvertisement, and the content-presentation device 104 begins replacingthe first advertisement with a second, different advertisement, thecontent-presentation device 104 can continue the replacement such thatthe entirety of the second advertisement is presented for displayinstead of the first advertisement.

As another example, the act of performing the first action can be orinclude aborting the content-modification operation before thecontent-modification operation is complete. That is, thecontent-presentation device 104 aborts performance of apartially-performed content-modification operation related to theidentified content-modification opportunity on the channel to which thecontent-presentation device 104 is tuned.

As yet another example, the act of performing the first action can be orinclude transmitting, to the fingerprint-matching server 106, anotification that the content-presentation device 104 has detected thefirst mismatch within the predefined time period after the modificationstart-time and during performance of the content-modification operation.Receipt of the notification by the fingerprint-matching server 106 canfacilitate the fingerprint-matching server 106 determining that thefirst mismatch is due to the tuner device 500 having modified themodifiable content-segment before the modification start-time, and, asdescribed in more detail below, can facilitate the fingerprint-matchingserver 106 performing various actions in response to receiving thenotification. Further, in line with the discussion above, thefingerprint-matching server 106 can be configured to interpret receiptof the notification as an indication that the first mismatch was not theresult of a channel-change event. This action may be performed inaddition to continuing or aborting the content-modification operation.

As yet another example, the act of performing the first action can be orinclude transmitting, to the fingerprint-matching server 106, anindication that the content-presentation device 104 is receiving contenton the channel. This transmitted indication can take the form of thenotification described above, or can be a separate indication that istransmitted. The fingerprint-matching server 106 can be configured tointerpret receipt of the indication as an indication that the firstmismatch was not the result of a channel-change event. This first actionmay be performed in addition to continuing or aborting thecontent-modification operation.

In some embodiments, the content-presentation device 104 can take intoaccount additional or alternative factors as a basis for performing thefirst action.

For example, the content-presentation device 104 can use automaticcontent recognition (ACR) data and/or other techniques to identify afootprint of the MVPD 502 and use the detection of the footprint as anadditional or alternative basis for performing the first action. Tofacilitate this, for instance, the content-presentation device 104 caninclude an ACR module configured to generate ACR data (e.g., fingerprintdata and/or watermarks) representing content presented by thecontent-presentation device 104 and viewed by an end-user on one or morechannels, including content received from the tuner device 500.

The content-presentation device 104 can then determine whether at leasta portion of the ACR data identifies the MVPD 502.

For example, the content-presentation device 104 can compare the ACRdata to a channel lineup associated with the MVPD 502 and determinewhether there is a match. As a more particular example, thecontent-presentation device 104 can compare the ACR data to one or morechannel lineups, and/or other broadcast schedule data, associated withthe MVPD 502 and other content distributors. To facilitate this, thecontent-presentation device 104 can access or locally store data thatmaps each of a plurality of identifiers of content distributors to arespective channel lineup.

The ACR data can include viewing data that the content-modificationsystem 100 has determined to be associated with a particular subset ofchannels. Thus, the content-presentation device 104 can determine anidentity of the MVPD 502 and that the content-presentation device 104 isconnected to a tuner device associated with the MVPD 502 based at leastin part on the particular subset of channels being part of one of theone or more channel lineups. The content-presentation device 104 canthen responsively perform the first action.

As another example, the content-presentation device 104 can detect,based on the ACR data, the presence of one or more static user interfaceelements that the content-presentation device 104 displays and thatknown to be associated with a particular tuner device and/or with aparticular MVPD (e.g., MVPD 502). Examples of such static user interfaceelements can include a logo for the MVPD 502 (e.g., on a boot-up screenfor the tuner device 500 or elsewhere as part of the graphical userinterface provided by the tuner device 500), a TV guide layout, channelmenu layout, other menu layout, or a boot-up screen layout. Moreparticularly, the content-presentation device 104 can refer to data thatstores, for each of a plurality of tuner devices and/or MVPDs,corresponding known logos, templates of guide layouts, channel menulayouts, etc., and/or other static user interface elements, and candetermine whether the data matches at least a portion of the ACR data.In response to detecting a match, the content-presentation device 104can perform the first action, because the detected match can indicate tothe content-presentation device 104 that the content-presentation device104 is receiving content from a particular tuner device and/or MVPD thatcorresponds to the detected static user interface elements. Further, insome examples, the technique described above can be used to detect amatch between at least a portion of the ACR data and one or more dynamicuser interface elements that identify the MVPD 502. Such user interfaceelements can take the form of a user interface element that moves (e.g.,rotates, blinks, fades-in, fades-out), such as an animated logo for theMVPD 502.

As yet another example, there may be situations in which an MVPD 502 isrequired or encouraged to watermark any supplemental content that isused for a content-modification operation performed by the tuner device500 at the request of the MVPD 502. In these and other situations, thecontent-presentation device 104 can determine, within the predefinedtime period after the modification start-time and during performance ofthe content-modification operation, that at least a portion of thecontent that was received by the content-presentation device 104 fromthe tuner device 500 and that is being modified as part of thecontent-modification operation includes a watermark associated with acontent distributor (e.g., MVPD 502), such as a video watermark and/oran audio watermark. The act of performing the first action can thus beperformed in response to or further in response to this determination.This can increase the confidence with which the content-modificationsystem 100 identifies a situation in which the tuner device 500 hasperformed a content-modification operation. Further, the performed firstaction in this situation can be or include transmitting an indication tothe fingerprint-matching server 106 that the content-presentation device104 detected the watermark associated with the MVPD 502. Thedetermination of the presence of a watermark in the embodimentsdescribed above can be performed using any technique now known or laterdeveloped.

In some embodiments, the content-presentation device 104, thefingerprint-matching server 106, and/or other computing systems of thecontent-modification system 100 can receive a list of modifiablecontent-segments that have been made available to a MVPD or othercontent distributor, such as a list of advertisements on a contentprovider's (e.g., television programmer) 14 minutes of advertisementinventory, for instance. In such embodiments, the content-presentationdevice 104 might perform the first action further in response to adetermination (e.g., made by the content-presentation device 104 oranother computing system of the content-modification system 100) thatthe list includes the modifiable content-segment that thecontent-presentation device 104 was expecting to receive in connectionwith the identified upcoming content-modification opportunity. Thus, ifthe content-presentation device 104 was expecting a modifiablecontent-segment that was made available to MVPDs and sees that itreceived different content from the tuner device 500, thecontent-presentation device 104 can determine with higher confidencethat the tuner device 500 has performed a content-modification operationbefore the modification start-time.

The disclosed methods and systems also include operations that thefingerprint-matching server 106 can perform in accordance with theabove-described operations that the content-presentation device 104performs. These operations will now be described in greater detail.Further, although the operations will be described primarily as beingperformed by the fingerprint-matching server 106, other entities of thecontent-modification system 100, such as the content-management system108 or the data-management system 110, could perform one or more of suchoperations in alternative embodiments.

The fingerprint-matching server 106 can determine that thecontent-presentation device 104 has detected the above-described firstmismatch within the predefined time period after the modificationstart-time and during performance of the content-modification operation.For example, the fingerprint-matching server 106 can make thisdetermination based on the notification and/or other indication messagedescribed above that the fingerprint-matching server 106 receives fromthe content-presentation device 104.

Further, the fingerprint-matching server 106 can be configured tointerpret this determination as a determination that the first mismatchis due to the tuner device 500 having modified the modifiablecontent-segment before the modification start-time and, in response todetermining that the first mismatch is due to the tuner device 500having modified the modifiable content-segment before the modificationstart-time, the fingerprint-matching server 106 can perform an action(hereinafter alternatively referred to as the “second action,” todistinguish performance of this action from the first action describedabove with respect to the content-presentation device 104). The secondaction can be or include one or more of the following actions.

As an example, the act of performing the second action can be or includeperforming an action that facilitates the content-presentation device104 continuing performance of the content-modification operation untilthe content-modification operation is complete. In some instances,performance of an action that facilitates the content-presentationdevice 104 continuing performance of the content-modification operationuntil the content-modification operation is complete can take the formof performing no action that would cause the content-presentation device104 to abort the content-modification operation. Alternatively, thefingerprint-matching server 106 can transmit, to thecontent-presentation device 104, an instruction to continue performanceof the content-modification operation until the content-modificationoperation is complete.

As another example, the act of performing the second action can be orinclude performing an action that facilitates the content-presentationdevice 104 aborting performance of the content-modification operationbefore the content-modification operation is complete. For instance, thefingerprint-matching server 106 can send an instruction to thecontent-presentation device 104 to abort performance of apartially-performed content-modification operation related to theidentified content-modification opportunity on the channel to which thecontent-presentation device 104 is tuned.

As yet another example, the act of performing the second action can beor include performing a fingerprint comparison other than a cold matchattempt, in order to more quickly confirm that the content-presentationdevice 104 is still on the channel after either the content-presentationdevice 104 or the tuner device 500 completes its respectivecontent-modification operation. For example, as opposed to a cold matchattempt in which the fingerprint-matching server 106 compares queryfingerprint data from the content-presentation device 104 against alarge amount of reference fingerprint data associated with content froma large amount of channels, the fingerprint-matching server 106 mightfirst attempt to match the query fingerprint data against referencefingerprint data from the channel, thus effectively assuming that thecontent-presentation device 104 did not change channels after thecontent-modification operation, and thus increasing the likelihood ofdetecting a match more quickly if the content-presentation device 104did not change channels. In some situations, if no such match isdetected, the fingerprint-matching server 106 can begin comparing thequery fingerprint data to reference fingerprint data associated with amore-limited set of channels, such as other channels known to be part ofMVPD's 502 channel lineup.

As yet another example, the act of performing the second action can beor include storing, in memory, an indication that the first mismatch isdue to the tuner device 500 having modified the modifiablecontent-segment responsive to an instruction from the MVPD 502.Additionally or alternatively, the fingerprint-matching server 106 canstore, in memory, metadata identifying the content-presentation device104 and/or the tuner device 500, such as an Internet protocol (IP)address (e.g., a public IP address of the household to which thecontent-presentation device 104 tuner device 500 belongs), a deviceidentifier of the content-presentation device 104, a device identifierof the tuner device 500, a hashed version of the IP address and/or thedevice identifier of the content-presentation device 104, a hashedversion of the IP address and/or the device identifier of the tunerdevice 500, and/or other information associated with a household towhich the content-presentation device 104 and/or the tuner device 500belongs, such as a geolocation of the content-presentation device 104, ageolocation of the tuner device 500, demographic information, etc. Insome situations, the notification that the fingerprint-matching server106 receives from the content-presentation device 104 can include thedevice identifier, hashed IP address, etc. for the content-presentationdevice 104.

In practice, the historical content consumption data can be consideredas a basis for selecting supplemental to deliver to acontent-presentation device for content-modification operations, or fordetermining whether to dedicate computational resources to selecting anddelivering supplemental content to a content-presentation device forcontent-modification operations, among other uses. Thus, it can beimportant that the historical content consumption data accuratelyreflect the content that a content-presentation device presents and thatcontent-presentation device's associated tendency to change channels.

Accordingly, as yet another example, the act of performing the secondaction can be or include updating historical content consumption dataassociated with the content-presentation device 104 to indicate that thecontent-presentation device 104 is receiving content on the channel andhas not changed channels. For instance, the fingerprint-matching server106 can update the historical content consumption data to indicate, foreach content-presentation device, a time period during which thecontent-presentation device was receiving content on the channel. Insome examples, the act of updating the historical content consumptiondata to indicate that the content-presentation device 104 is receivingcontent on the channel and has not changed channels can involve thefingerprint-matching server 106 deciding not to update the historicalcontent consumption data to indicate that the content-presentationdevice 104 has changed channels, despite receiving a notificationindicating that the first mismatch was detected.

As yet another example, the act of performing the second action can beor include updating a counter (e.g., stored in a database) representinga total number of content-presentation devices that are connected totuner devices and/or adding a device identifier associated with thecontent-presentation device 104 to a list of the total number ofcontent-presentation devices that are connected to tuner devices. Aswill be discussed in more detail below, this can help thefingerprint-matching server 106 and/or other entities of thecontent-modification system 100 take actions with respect to groups ofcontent-presentation devices, specifically taking into account whethersuch content-presentation devices are connected to tuner devices andthus whether such tuner devices are likely to performcontent-modification operations at the instruction of MVPDs. Otherbenefits are possible as well.

In some embodiments, the fingerprint-matching server 106 can take intoaccount additional or alternative factors as a basis for performing thesecond action, including but not limited to any of the factors describedabove with respect to the content-presentation device 104.

For example, the fingerprint-matching server 106 can determine that alist of modifiable content-segments includes the modifiablecontent-segment that the content-presentation device 104 was expectingto receive in connection with the identified upcomingcontent-modification opportunity. The fingerprint-matching server 106can make this determination in the same or similar manner as describedabove with respect to the content-presentation device 104. The act ofperforming the second action can thus be performed in response to orfurther in response to this determination.

As another example, the fingerprint-matching server 106 can receive,from the content-presentation device 104, the ACR data described above,and can use the ACR data as described above to determine whether atleast a portion of the ACR data identifies the MVPD 502. The act ofperforming the second action can thus be performed in response to orfurther in response to this determination.

As yet another example, the fingerprint-matching server 106 can usemapping data as a factor. In particular, mapping data that maps thecontent-presentation device 104 to the tuner device 500 can increase theconfidence with which the content-modification system 100 determinesthat the tuner device 500 performed a content-modification operationbefore the modification start-time, and can additionally can increasethe confidence with which the content-modification system 100 determinesthat the tuner device 500 is likely to perform other suchcontent-modification operations again in the future. The mapping datacan be determined by the fingerprint-matching server 106 and/or by thecontent-management system 108, using various techniques, including butnot limited to the techniques described in U.S. patent application Ser.No. 17/146,569, filed Jan. 12, 2021, the entirety of which is herebyincorporated by reference herein. The mapping data can also usefully actas a representation of various households, each household having aparticular number of content-presentation devices, one or more of whichmay be connected to a tuner device). Consideration of whether tunerdevices are present in such households can also help thefingerprint-matching server 106 and/or other entities of thecontent-modification system 100 take actions with respect to groups ofcontent-presentation devices.

Operations related to detecting and responding to content-modificationoperations performed by groups of tuner devices connected to associatedcontent-presentation devices will now be described in more detail.

In particular, the fingerprint-matching server 106 can identify a groupof multiple content-presentation devices that are tuned to the samechannel and that are each scheduled to perform, at a modificationstart-time, a respective content-modification operation that comprisesmodifying a modifiable content-segment in connection with an upcomingcontent-modification opportunity on the channel. Each suchcontent-presentation device can be identified using any of thetechniques described herein.

The fingerprint-matching server 106 can then determine that, after themodification start-time, at least a subgroup of the group ofcontent-presentation devices have detected a mismatch between referencefingerprint data representing the modifiable content-segment and queryfingerprint data representing content received by at least the subgroupof content-presentation devices. This particular mismatch will behereinafter alternatively referred to as a “second mismatch.” Comparedto the embodiments described above in which the detected first mismatchis a mismatch that is specifically detected within a predefined timewindow that content-presentation devices can be configured to use, thesecond mismatch can, in some instances, be a mismatch that is detectedat any time-point after the modification start-time and duringperformance of the content-modification operation, or can be a mismatchthat is detected within a different predefined time window (e.g., withinsix seconds after the modification start-time).

In some embodiments, the fingerprint-matching server 106 can determinethat at least the subgroup of content-presentation devices have detectedthe second mismatch based on receiving, from each suchcontent-presentation device, a notification or other indication that thesecond mismatch was detected. However, because the second mismatch mightnot be a mismatch detected within the predefined time window describedabove in some instances, the fingerprint-matching server 106 might notbe configured to interpret receive of such notifications as indicationsthat the content-presentation devices from which the notifications werereceived are connected to tuner devices that may have caused the secondmismatches.

In an example scenario, the fingerprint-matching server 106 can identifya group of one hundred content-presentation devices tuned to the samechannel and scheduled to perform content-modification operations, andcan receive notifications from a subgroup of eighty of thosecontent-presentation devices that have each detected a second mismatch.In another example scenario, one hundred content-presentation devicescan be in the identified group, and the fingerprint-matching server 106can receive notifications from all one hundred of thecontent-presentation devices.

The fingerprint-matching server 106 can then determine that at least thesubgroup of content-presentation devices are connected to tuner devicesassociated with the same content distributor (e.g., MVPD 502). Phrasedanother way, the fingerprint-matching server 106 can determine that atleast some of the content-presentation devices in the group areconnected to tuner devices that are within the same MVPD footprint.

The fingerprint-matching server 106 can make this determination invarious ways, including but not limited to some of the techniquesdescribed above, such as the techniques for matching ACR data to channellineups and/or static user interface elements, for example. Inparticular, for each particular content-presentation device of at leastthe subgroup of content-presentation devices, the fingerprint-matchingserver 106 can (i) receive (e.g., from the particularcontent-presentation device) ACR data representing content received bythe particular content-presentation device from a respective one of thetuner devices and that identifies the content distributor and (ii)detect a match between at least a portion of the ACR data and one ormore of (a) a channel lineup (and/or other broadcast schedule data)associated with the content distributor or (b) one or more static(and/or dynamic) user interface elements associated with the contentdistributor. To facilitate a comparison of the ACR data with a channellineup, the fingerprint-matching server 106 can access or locally storedata that maps each of a plurality of identifiers of contentdistributors to a respective channel lineup, for instance.

As another example, the act of determining that at least the subgroup ofcontent-presentation devices are connected to tuner devices associatedwith the same content distributor can involve, for each particularcontent-presentation device of at least the subgroup ofcontent-presentation devices, (i) determining, based on historicalcontent consumption data associated with the particularcontent-presentation device, a set of one or more channels on which theparticular content-presentation device has received content, and (ii)determining that the set of channels matches at least a portion of achannel lineup (and/or other broadcast schedule data) associated withthe content distributor. To facilitate this, for instance, thefingerprint-matching server 106 can use the above-noted data that mapseach of a plurality of identifiers of content distributors to arespective channel lineup. In some embodiments, the fingerprint-matchingserver 106 can limit the set of one or more channels to include one ormore channels on which the particular content-presentation device hasreceived content within a predefined time period, such as one day, oneweek, or one month.

As yet another example, the act of determining that at least thesubgroup of content-presentation devices are connected to tuner devicesassociated with the same content distributor can involve, for eachparticular content-presentation device of at least the subgroup ofcontent-presentation devices, receiving, from the particularcontent-presentation device, an indication that at least a portion ofthe content that was received by the particular content-presentationdevice from a tuner device and that is being modified as part of theparticular content-presentation device's scheduled content-modificationoperation includes a watermark associated with the MVPD 502. Otherexamples are possible as well.

In response to determining that at least the subgroup ofcontent-presentation devices are connected to tuner devices associatedwith the same content distributor, the fingerprint-matching server 106can perform an action (hereinafter alternatively referred to as the“third action,” to distinguish performance of this action from the firstand second actions described above). The third action can be or includeone or more of the following actions.

As an example, the act of performing the third action can be or includeperforming an action that facilitates at least the subgroup ofcontent-presentation devices continuing performance of thecontent-modification operations until the content-modificationoperations are complete. For instance, for each particularcontent-presentation device of at least the subgroup ofcontent-presentation devices, the fingerprint-matching server 106 canperform a respective action that facilitates that particularcontent-presentation device continuing performance of that particularcontent-presentation device's respective content-modification operation.

Further, in some situations, the remaining content-presentation devicesof the group may continue to perform respective content-modificationoperations uninterrupted by the fingerprint-matching server 106, unlessone or more of such content-presentation devices detect and reportmismatches that are not known to be associated with tuner devicesperforming content-modification operations, in which case the one ormore content-presentation devices can abort performance of theirrespective content-modification operations before thecontent-modification operations are complete. That is,content-presentation devices that receive the originally-scheduledbroadcasted content can continue performance of theircontent-modification operations, content-presentation devices thatdetect second mismatches and are determined to be connected to tunerdevices associated with the same content distributor (e.g., within thesame MVPD footprint) can continue performance of theircontent-modification operations, but content-presentation devices thatdetect second mismatches but are connected to tuner devices associatedwith a different content distributor or otherwise are determined not tobe associated with that same content distributor can be directed to, ormay automatically, abort performance of their respectivecontent-modification operations before those content-modificationoperations are complete.

As another example, the act of performing the third action can be orinclude performing an action that facilitates at least the subgroup ofcontent-presentation devices aborting performance of thecontent-modification operations before the content-modificationoperations are complete. For instance, for each particularcontent-presentation device of at least the subgroup ofcontent-presentation devices, the fingerprint-matching server 106 canperform a respective action that facilitates that particularcontent-presentation device aborting performance of that particularcontent-presentation device's respective partially-performedcontent-modification operation.

As yet another example, the act of performing the third action can be orinclude updating historical content consumption data associated with atleast the subgroup of content-presentation devices to indicate that atleast the subgroup of content-presentation devices are receiving contenton the channel and have not changed channels. For instance, thefingerprint-matching server 106 can update the historical contentconsumption data to indicate, for each content-presentation device, atime period during which the content-presentation device was receivingcontent on the channel. In some examples, the act of updating thehistorical content consumption data to indicate that at least thesubgroup of content-presentation devices are receiving content on thechannel and have not changed channels can involve thefingerprint-matching server 106 deciding not to update the historicalcontent consumption data to indicate that at least the subgroup ofcontent-presentation devices have changed channels, despite receivingnotifications indicating that the second mismatch was detected for eachsuch content-presentation device.

As indicated above, this can be useful because it can help thehistorical content consumption data accurately reflect the content thatcontent-presentation devices present and those content-presentationdevices' associated tendencies to change channels.

In some embodiments, the fingerprint-matching server 106 can take intoaccount additional or alternative factors as a basis for performing thethird action, including but not limited to the examples described above.For instance, the fingerprint-matching server 106 can perform the thirdaction in response to making a determination that the modifiable-contentsegment that the group of content-presentation devices are planning tomodify in accordance with the upcoming content-modification opportunityis one of a list of modifiable content-segments that have been madeavailable to a MVPD or other content distributor.

As another example, the fingerprint-matching server 106 can beconfigured to determine that at least the subgroup ofcontent-presentation devices are located within the same geographic areaassociated with the content distributor—that is, to determine that thesecond mismatches are occurring within a particular geographic area—andcan use the result of the determination to cause performance of thethird action. For instance, the MVPD 502 might be an MVPD that serves aplurality of tuner devices located in a particular geographic area, suchas a city or county. Thus, if the fingerprint-matching server 106determines that the tuner devices that are performingcontent-modification operations and causing the second mismatches tooccur are all within the MVPD's 502 geographic footprint, thefingerprint-matching server 106 can perform a particular third actionwith respect to each of those content-presentation devices, such as byhelping each content-presentation device in that geographic footprintcontinue performance of its respective content-modification operation.Knowledge of a geographic area in which an MVPD operates can alsoimprove the confidence with which the fingerprint-matching server 106performs actions relative to future content-modification operations aswell, because a household being within the geographic area can increasethe likelihood of that household including a tuner device associatedwith the MVPD that operates in the geographic area.

Additionally or alternatively, the fingerprint-matching server 106 candecide which third action to perform based on how manycontent-presentation devices detected a second mismatch (e.g., based onhow many notifications of the detected second mismatches thefingerprint-matching server 106 receives). In some examples, forinstance, the fingerprint-matching server 106 can determine that atleast the subgroup of content-presentation devices that detected thesecond mismatch make up at least a threshold percentage of the group ofcontent-presentation devices and, in response to this determination, thefingerprint-matching server 106 can perform a third action thatfacilitates at least the subgroup of content-presentation devicesaborting performance of the content-modification operations before thecontent-modification operations are complete. The threshold percentagecan be a value in a range of 90% to 100%, or can be another valueoutside of that range. In a more specific example, if thefingerprint-matching server 106 determines that at least 90% of thegroup detected the second mismatch, the fingerprint-matching server 106can instruct at least the 90% of content-presentation devices to aborttheir respective content-modification operations before thosecontent-modification operations are complete. In some instances, if thethreshold percentage is met or exceeded, the fingerprint-matching server106 can instruct the entire group of content-presentation devices toabort their respective content-modification operations.

In other examples, the fingerprint-matching server 106 can determinethat at least the subgroup of content-presentation devices that detectedthe second mismatch make up less than the threshold percentage (or athreshold percentage different from the one described above) of thegroup of content-presentation devices and, in response to thisdetermination, the fingerprint-matching server 106 can perform a thirdaction that facilitates at least the subgroup of content-presentationdevices continuing performance of the content-modification operationsuntil the content-modification operations are complete. In a morespecific example, if the fingerprint-matching server 106 determines thatless than 90% of the group detected the second mismatch, such as 50% ofthe group, the fingerprint-matching server 106 can facilitate at leastthe 50% of content-presentation devices continuing their respectivecontent-modification operations until the content-modificationoperations are complete. In some instances, if the number falls belowthe threshold percentage, the fingerprint-matching server 106 caninstruct the entire group of content-presentation devices to continuetheir respective content-modification operations.

One reason it may be desirable to abort the content-modificationoperations when at least the subgroup of content-presentation devicesthat detected the second mismatch makes up a higher (e.g., 90% or above)percentage of the group of content-presentation devices is that such ahigh percentage can be indicative of the second mismatches having beendue not to tuner device interference, but rather due to a contentprovider changing the broadcasted content without updating the broadcastschedule data. For instance, a content programmer might have decided torun a different advertisement instead of the modifiable content-segmentwithout informing the content-modification system 100. However, one ormore of the techniques described above (e.g., the predefined timewindow) can be used to increase the confidence with which thefingerprint-matching server 106 is aware of which (if any)content-presentation devices are connected to tuner devices, and whethersuch tuner devices are responsible for the detected mismatches.

Along these lines, in some embodiments, the fingerprint-matching server106 can determine that at least the subgroup of content-presentationdevices detected first mismatches, such as by receiving notificationsfrom each such content-presentation device. In such embodiments, thefingerprint-matching server 106 can determine that at least the subgroupof content-presentation devices that detected the first mismatch make upat least a threshold percentage of the group of content-presentationdevices and, in response to this determination, the fingerprint-matchingserver 106 can perform a third action that facilitates at least thesubgroup of content-presentation devices aborting performance of thecontent-modification operations before the content-modificationoperations are complete. The threshold percentage can be a value in arange of 90% to 100%, or can be another value outside of that range. Ina more specific example, if the fingerprint-matching server 106determines that at least 99% of the group detected the first mismatch,the fingerprint-matching server 106 can instruct at least the 99% ofcontent-presentation devices to abort their respectivecontent-modification operations before those content-modificationoperations are complete. In some instances, if the threshold percentageis met or exceeded, the fingerprint-matching server 106 can instruct theentire group of content-presentation devices to abort their respectivecontent-modification operations.

Further, if the fingerprint-matching server 106 receives notificationsindicating, or otherwise determines, that less than the thresholdpercentage (e.g., less than 90%) of the group detected a first mismatch,the fingerprint-matching server 106 can responsively perform an actionthat facilitates at least the subgroup of content-presentation devicescontinuing performance of the content-modification operations until thecontent-modification operations are complete. As a more specificexample, if less than 99% of the content-presentation devices in thegroup detected a first mismatch, the fingerprint-matching server 106responsively instruct all of the content-presentation devices in thegroup to continue their respective content-modification operations untilthose content-modification operations are complete. In some instances,if the number falls below the threshold percentage, thefingerprint-matching server 106 can instruct the entire group ofcontent-presentation devices to continue their respectivecontent-modification operations.

As another example, if 95% of the group of content-presentation devicesdetected first mismatches (e.g., within one second of the modificationstart-time), then the fingerprint-matching server 106 can be configuredto interpret this as a likely indication that the content distributor(e.g., content programmer) has broadcasted a different content segmentinstead of the originally-scheduled modifiable content-segment.

Using at least some of the operations described above, thecontent-modification system 100 can be configured to keep track overtime of which content-presentation devices are connected to tunerdevices and are likely to be experiencing detected fingerprintmismatches (e.g., first mismatches or second mismatches) due to tunerdevices performing content-modification operations at the instruction ofan MVPD. For instance, the fingerprint-matching server 106 or otherentity of the content-modification system 100 can update the mappingdata described above to indicate, for each of a plurality ofcontent-presentation device identifiers, (i) whether thecontent-presentation device is connected to a tuner device, (ii) aidentifier of an MVPD associated with the tuner device, and/or (iii) afrequency at which the content-presentation device detects mismatchesdue to the tuner device performing content-modification operations. Themapping data can then be used to better inform decisions made bycontent-presentation devices and/or the fingerprint-matching server 106as to which actions to perform relative to the content-modificationoperations and relative to future content-modification operations.

As an example, the frequency at which a plurality ofcontent-presentation devices detects mismatches due to the tuner deviceperforming content-modification operations can be used to determine oradjust the threshold percentages noted above. For example, if 80 of 100content-presentation devices detect mismatches and thefingerprint-matching server 106 determines that 70 of those 80content-presentation devices frequently detect mismatches due to tunerdevices performing content-modification operations, thefingerprint-matching server 106 cam determine (or adjust) the thresholdpercentage to be 70%. Other examples are possible as well.

FIG. 6 is a flow chart of an example method 600. As discussed above, themethod 600 is performed by a content-presentation device (e.g.,content-presentation device 104) that is scheduled to perform, at amodification start-time, a content-modification operation that comprisesmodifying a modifiable content-segment that the content-presentationdevice is scheduled to receive.

At block 602, the method 600 includes receiving reference fingerprintdata representing the modifiable content-segment.

At block 604, the method 600 includes making a comparison of thereference fingerprint data with query fingerprint data representingcontent received by the content-presentation device from a tuner deviceconnected to the content-presentation device.

At block 606, the method 600 includes based on the comparison,detecting, within a predefined time period after the modificationstart-time and during performance of the content-modification operation,a mismatch between the reference fingerprint data and the queryfingerprint data.

At block 608, the method 600 includes in response to detecting themismatch within the predefined time period after the modificationstart-time and during performance of the content-modification operation,performing an action.

In some embodiments, the content-presentation device can be part of acontent-modification system, and the tuner device can be a STB that isnot part of the content-modification system and that is associated witha MVPD.

In some embodiments, the predefined time period can be a value in arange of 1 to 4 seconds.

In some embodiments, the act of performing the action can involvecontinuing performance of the content-modification operation until thecontent-modification operation is complete.

In some embodiments, the act of performing the action can involvetransmitting, to a fingerprint-matching server, a notification that thecontent-presentation device has detected the mismatch within thepredefined time period after the modification start-time and duringperformance of the content-modification operation, to facilitate thefingerprint-matching server determining that the mismatch is due to thetuner device having modified the modifiable content-segment before themodification start-time.

In some embodiments, the content-modification operation can be scheduledto be performed relative to an identified content-modificationopportunity on a channel to which the content-presentation device istuned, and the act of performing the action can involve transmitting, toa fingerprint-matching server, an indication that thecontent-presentation device is receiving content on the channel.

In some embodiments, performing the action can involve aborting thecontent-modification operation before the content-modification operationis complete.

In some embodiments, the method 600 can also include determining, withinthe predefined time period after the modification start-time and duringperformance of the content-modification operation, that at least aportion of the content that was received by the content-presentationdevice from the tuner device and that is being modified as part of thecontent-modification operation includes a watermark associated with acontent distributor. In such embodiments, the act of performing theaction can be performed further in response to determining that at leastthe portion of the content that was received by the content-presentationdevice from the tuner device and that is being modified as part of thecontent-modification operation includes the watermark associated withthe content distributor.

In some embodiments, the content-modification operation can be acontent-replacement operation that involves replacing the modifiablecontent-segment with first supplemental content, and the queryfingerprint data can represent second supplemental content with whichthe tuner device replaced the modifiable content-segment before themodification start-time.

FIG. 7 is a flow chart of another example method 700. As discussedabove, the method 700 is performed by a computing system (e.g., afingerprint-matching server 106) that is in communication with acontent-presentation device (e.g., content-presentation device 104),where the content-presentation device is scheduled to perform, at amodification start-time, a content-modification operation that comprisesmodifying a modifiable content-segment that the content-presentationdevice is scheduled to receive.

At block 702, the method 700 includes determining that thecontent-presentation device has detected, within a predefined timeperiod after the modification start-time and during performance of thecontent-modification operation, a mismatch between reference fingerprintdata representing the modifiable content-segment and query fingerprintdata representing content received by the content-presentation devicefrom a tuner device connected to the content-presentation device.

At block 704, the method 700 includes determining that the mismatch isdue to the tuner device having modified the modifiable content-segmentbefore the modification start-time.

At block 706, the method 700 includes in response to determining thatthe mismatch is due to the tuner device having modified the modifiablecontent-segment before the modification start-time, performing anaction.

In some embodiments, the computing system and the content-presentationdevice can be are part of a content-modification system, and the tunerdevice can be a STB that is not part of the content-modification systemand that is associated with a MVPD.

In some embodiments, the predefined time period can be a value in arange of 1 to 4 seconds.

In some embodiments, the method 700 can also include receiving a list ofmodifiable content-segments that have been made available to a contentdistributor, and determining that the list of modifiablecontent-segments includes the modifiable content-segment. In suchembodiments, the act of performing the action can be performed furtherin response to determining that the list of modifiable content-segmentsincludes the modifiable content-segment.

In some embodiments, the act of performing the action can involvestoring an indication that the mismatch is due to the tuner devicehaving modified the modifiable content-segment responsive to aninstruction from a content distributor.

In some embodiments, the method 700 can also include identifying acontent-modification opportunity on a channel to which thecontent-presentation device is tuned. In such embodiments, thecontent-modification operation can be scheduled to be performed relativeto the identified content-modification opportunity, and the act ofperforming the action can involve updating historical contentconsumption data associated with the content-presentation device toindicate that the content-presentation device is receiving content onthe channel and has not changed channels.

In some embodiments, the act of performing the action can involve one ormore of: updating a counter representing a total number ofcontent-presentation devices that are connected to tuner devices, oradding a device identifier associated with the content-presentationdevice to a list of the total number of content-presentation devicesthat are connected to tuner devices.

In some embodiments, the act of performing the action can involveperforming an action that facilitates the content-presentation devicecontinuing performance of the content-modification operation until thecontent-modification operation is complete.

In some embodiments, the act of performing the action can involveperforming an action that facilitates the content-presentation deviceaborting performance of the content-modification operation before thecontent-modification operation is complete.

In some embodiments, the content-modification operation can be acontent-replacement operation that involves replacing the modifiablecontent-segment with first supplemental content, and the queryfingerprint data can represent second supplemental content with whichthe tuner device replaced the modifiable content-segment before themodification start-time.

FIG. 8 is a flow chart of another example method 800. As discussedabove, the method 800 can be performed by a computing system (e.g., afingerprint-matching server 106, content-management system 108, etc.)that is in communication with a content-presentation device (e.g.,content-presentation device 104).

At block 802, the method 800 includes identifying a group of multiplecontent-presentation devices that are tuned to the same channel and thatare each scheduled to perform, at a modification start-time, arespective content-modification operation that comprises modifying amodifiable content-segment in connection with an upcomingcontent-modification opportunity on the channel.

At block 804, the method 800 includes determining that, after themodification start-time, at least a subgroup of the group ofcontent-presentation devices have detected a mismatch between referencefingerprint data representing the modifiable content-segment and queryfingerprint data representing content received by at least the subgroupof content-presentation devices.

At block 806, the method 800 includes determining that at least thesubgroup of content-presentation devices are connected to tuner devicesassociated with the same content distributor.

At block 808, the method 800 includes in response to determining that atleast the subgroup of content-presentation devices are connected totuner devices associated with the same content distributor, performingan action.

In some embodiments, the group of content-presentation devices can bepart of a content-modification system, at least one of the tuner devicescan be a STB that is not part of the content-modification system, andthe content distributor can be a MVPD.

In some embodiments, the method 800 can also include determining that atleast the subgroup of content-presentation devices are located withinthe same geographic area associated with the content distributor. Insuch embodiments, the act of performing the action can be performedfurther in response to determining that at least the subgroup ofcontent-presentation devices are located within the same geographic areaassociated with the content distributor.

In some embodiments, the act of determining that at least the subgroupof content-presentation devices are connected to tuner devicesassociated with the same content distributor can involve for eachcontent-presentation device of at least the subgroup ofcontent-presentation devices: receiving ACR data that represents contentreceived by the content-presentation device from a respective one of thetuner devices and that identifies the content distributor, and detectinga match between at least a portion of the ACR data and one or more of: achannel lineup associated with the content distributor, or one or morestatic user interface elements associated with the content distributor.In such embodiments, the one or more static user interface elements caninclude one or more of a logo, a menu layout, a television guide layout,or a boot-up screen for the respective one of the tuner devices.

In some embodiments, the act of determining that at least the subgroupof content-presentation devices are connected to tuner devicesassociated with the same content distributor can involve for eachcontent-presentation device of at least the subgroup ofcontent-presentation devices: determining, based on historical contentconsumption data associated with the content-presentation device, a setof one or more channels on which the content-presentation device hasreceived content, and determining that the set of channels matches atleast a portion of a channel lineup associated with the contentdistributor.

In some embodiments, the act of performing the action can involveupdating historical content consumption data associated with at leastthe subgroup of content-presentation devices to indicate that at leastthe subgroup of content-presentation devices are receiving content onthe channel and have not changed channels.

In some embodiments, the act of performing the action can involveperforming an action that facilitates at least the subgroup ofcontent-presentation devices continuing performance of thecontent-modification operations until the content-modificationoperations are complete.

In some embodiments, the act of performing the action can involveperforming an action that facilitates at least the subgroup ofcontent-presentation devices aborting performance of thecontent-modification operations before the content-modificationoperations are complete.

In some embodiments, the method 800 can also include determining that atleast the subgroup of content-presentation devices that detected themismatch make up at least a threshold percentage of the group ofcontent-presentation devices. In such embodiments, the act of performingthe action can be performed further in response to determining that atleast the subgroup of content-presentation devices that detected themismatch make up at least the threshold percentage of the group ofcontent-presentation devices and comprises performing an action thatfacilitates at least the subgroup of content-presentation devicesaborting performance of the content-modification operations before thecontent-modification operations are complete.

In some embodiments, the method 800 can also include determining that atleast the subgroup of content-presentation devices that detected themismatch make up less than a threshold percentage of the group ofcontent-presentation devices.

In such embodiments, the act of performing the action can be performedfurther in response to determining that at least the subgroup ofcontent-presentation devices that detected the mismatch make up lessthan the threshold percentage of the group of content-presentationdevices and comprises performing an action that facilitates at least thesubgroup of content-presentation devices continuing performance of thecontent-modification operations until the content-modificationoperations are complete.

In some embodiments, the content-modification operations can becontent-replacement operations that comprise replacing the modifiablecontent-segment with respective first supplemental content, and thequery fingerprint data can represent second supplemental content withwhich the tuner devices replaced the modifiable content-segment beforethe modification start-time.

IV. Example Variations

Although the examples and features described above have been describedin connection with specific entities and specific operations, inpractice, there are likely to be many instances of these entities andmany instances of these operations being performed, perhapscontemporaneously or simultaneously, on a large-scale basis. Indeed, inpractice, the content-modification system 100 is likely to include manycontent-distribution systems (each potentially transmitting content onmany channels) and many content-presentation devices, with some or allof the described operations being performed on a routine and repeatingbasis in connection with some or all of these entities.

In addition, although some of the operations described in thisdisclosure have been described as being performed by a particularentity, the operations can be performed by any entity, such as the otherentities described in this disclosure. Further, although the operationshave been recited in a particular order and/or in connection withexample temporal language, the operations need not be performed in theorder recited and need not be performed in accordance with anyparticular temporal restrictions. However, in some instances, it can bedesired to perform one or more of the operations in the order recited,in another order, and/or in a manner where at least some of theoperations are performed contemporaneously/simultaneously. Likewise, insome instances, it can be desired to perform one or more of theoperations in accordance with one more or the recited temporalrestrictions or with other timing restrictions. Further, each of thedescribed operations can be performed responsive to performance of oneor more of the other described operations. Also, not all of theoperations need to be performed to achieve one or more of the benefitsprovided by the disclosure, and therefore not all of the operations arerequired.

Although certain variations have been described in connection with oneor more examples of this disclosure, these variations can also beapplied to some or all of the other examples of this disclosure as welland therefore aspects of this disclosure can be combined and/or arrangedin many ways. The examples described in this disclosure were selected atleast in part because they help explain the practical application of thevarious described features.

Also, although select examples of this disclosure have been described,alterations and permutations of these examples will be apparent to thoseof ordinary skill in the art. Other changes, substitutions, and/oralterations are also possible without departing from the invention inits broader aspects as set forth in the following claims.

What is claimed is:
 1. A method comprising: determining that a group ofmultiple content-presentation devices are tuned to a same channel andthat each content-presentation device of the group ofcontent-presentation devices is scheduled to perform, at a modificationstart-time, a respective content-modification operation that comprisesmodifying a modifiable content-segment in connection with an upcomingcontent-modification opportunity on the channel; determining that, afterthe modification start-time, at least a subgroup of the group ofcontent-presentation devices have detected a mismatch between referencefingerprint data representing the modifiable content-segment and queryfingerprint data representing content received by at least the subgroupof content-presentation devices; determining that at least the subgroupof content-presentation devices are connected to tuner devicesassociated with a same content distributor; and in response todetermining that, after the modification start-time, at least thesubgroup of content-presentation devices have detected the mismatchbetween the reference fingerprint data representing the modifiablecontent-segment and the query fingerprint data representing contentreceived by at least the subgroup of content-presentation devices, andfurther in response to determining that at least the subgroup ofcontent-presentation devices are connected to tuner devices associatedwith the content distributor, performing an action comprising updatinghistorical content consumption data associated with at least thesubgroup of content-presentation devices to indicate that at least thesubgroup of content-presentation devices are receiving content on thesame channel and have not changed channels.
 2. The method of claim 1,wherein performing the action comprises: performing the action inresponse to a determination that the modifiable content-segment that thegroup of content-presentation devices is scheduled to modify is one of alist of modifiable content-segments that have been made available to amulti-channel video program distributor (MVPD) or another contentdistributor.
 3. The method of claim 1, wherein the group ofcontent-presentation devices are part of a content-modification system,wherein at least one of the tuner devices is a set-top box (STB) that isnot part of the content-modification system, wherein eachcontent-presentation device of the subgroup of content-presentationdevices belongs to a respective household, wherein eachcontent-presentation device of the subgroup of content-presentationdevices is connected to a respective tuner device of the tuner devices,wherein the respective tuner device belongs to the respective household,and wherein the content distributor is a multi-channel video programdistributor (MVPD).
 4. The method of claim 1, further comprising:determining that at least the subgroup of content-presentation devicesare located within the same geographic area associated with the contentdistributor, wherein performing the action is performed further inresponse to determining that at least the subgroup ofcontent-presentation devices are located within the same geographic areaassociated with the content distributor.
 5. The method of claim 1,wherein determining that at least the subgroup of content-presentationdevices are connected to tuner devices associated with the same contentdistributor comprises: for each content-presentation device of at leastthe subgroup of content-presentation devices: receiving automaticcontent recognition (ACR) data that represents content received by thecontent-presentation device from a respective one of the tuner devicesand that identifies the content distributor, and detecting a matchbetween at least a portion of the ACR data and one or more of: a channellineup associated with the content distributor, or one or more staticuser interface elements associated with the content distributor.
 6. Themethod of claim 1, wherein determining that at least the subgroup ofcontent-presentation devices are connected to tuner devices associatedwith the same content distributor comprises: for eachcontent-presentation device of at least the subgroup ofcontent-presentation devices: determining, based on historical contentconsumption data associated with the content-presentation device, a setof one or more channels on which the content-presentation device hasreceived content, and determining that the set of one or more channelsmatches at least a portion of a channel lineup associated with thecontent distributor.
 7. The method of claim 1, wherein determining that,after the modification start-time, at least the subgroup of the group ofcontent-presentation devices have detected a mismatch between referencefingerprint data representing the modifiable content-segment and queryfingerprint data representing content received by at least the subgroupof content-presentation devices comprises: receiving, from eachcontent-presentation device of at least the subgroup ofcontent-presentation devices, a notification indicating that thecontent-presentation device detected the mismatch within a predefinedtime period after the modification start-time and during performance ofthe content-modification operation, wherein the predefined time periodafter the modification start-time represents a time period during whicha detected mismatch between reference fingerprint data and queryfingerprint data is expected to be caused by a tuner device to which thecontent-presentation device is connected having already modified themodifiable content-segment before the modification start-time.
 8. Anon-transitory computer-readable storage medium, having stored thereonprogram instructions that, upon execution by a processor, causeperformance of a set of operations comprising: determining that a groupof multiple content-presentation devices are tuned to a same channel andthat each content-presentation device of the group ofcontent-presentation devices is scheduled to perform, at a modificationstart-time, a respective content-modification operation that comprisesmodifying a modifiable content-segment in connection with an upcomingcontent-modification opportunity on the channel; determining that, afterthe modification start-time, at least a subgroup of the group ofcontent-presentation devices have detected a mismatch between referencefingerprint data representing the modifiable content-segment and queryfingerprint data representing content received by at least the subgroupof content-presentation devices; determining that at least the subgroupof content-presentation devices are connected to tuner devicesassociated with a same content distributor; and in response todetermining that, after the modification start-time, at least thesubgroup of content-presentation devices have detected the mismatchbetween the reference fingerprint data representing the modifiablecontent-segment and the query fingerprint data representing contentreceived by at least the subgroup of content-presentation devices, andfurther in response to determining that at least the subgroup ofcontent-presentation devices are connected to tuner devices associatedwith the content distributor, performing an action comprising updatinghistorical content consumption data associated with at least thesubgroup of content-presentation devices to indicate that at least thesubgroup of content-presentation devices are receiving content on thesame channel and have not changed channels.
 9. The non-transitorycomputer-readable storage medium of claim 8, wherein performing theaction comprises: performing the action in response to a determinationthat the modifiable content-segment that the group ofcontent-presentation devices is scheduled to modify is one of a list ofmodifiable content-segments that have been made available to amulti-channel video program distributor (MVPD) or another contentdistributor.
 10. The non-transitory computer-readable storage medium ofclaim 8, wherein the group of content-presentation devices are part of acontent-modification system, wherein at least one of the tuner devicesis a set-top box (STB) that is not part of the content-modificationsystem, and wherein the content distributor is a multi-channel videoprogram distributor (MVPD).
 11. The non-transitory computer-readablestorage medium of claim 8, the operations further comprising:determining that at least the subgroup of content-presentation devicesare located within the same geographic area associated with the contentdistributor, wherein performing the action is performed further inresponse to determining that at least the subgroup ofcontent-presentation devices are located within the same geographic areaassociated with the content distributor.
 12. The non-transitorycomputer-readable storage medium of claim 8, wherein determining that atleast the subgroup of content-presentation devices are connected totuner devices associated with the same content distributor comprises:for each content-presentation device of at least the subgroup ofcontent-presentation devices: receiving automatic content recognition(ACR) data that represents content received by the content-presentationdevice from a respective one of the tuner devices and that identifiesthe content distributor, and detecting a match between at least aportion of the ACR data and one or more of: a channel lineup associatedwith the content distributor, or one or more static user interfaceelements associated with the content distributor.
 13. The non-transitorycomputer-readable storage medium of claim 8, wherein determining that atleast the subgroup of content-presentation devices are connected totuner devices associated with the same content distributor comprises:for each content-presentation device of at least the subgroup ofcontent-presentation devices: determining, based on historical contentconsumption data associated with the content-presentation device, a setof one or more channels on which the content-presentation device hasreceived content, and determining that the set of one or more channelsmatches at least a portion of a channel lineup associated with thecontent distributor.
 14. The non-transitory computer-readable storagemedium of claim 8, wherein determining that at least the subgroup ofcontent-presentation devices are connected to tuner devices associatedwith the same content distributor comprises: for eachcontent-presentation device of at least the subgroup ofcontent-presentation devices: determining, based on historical contentconsumption data associated with the content-presentation device, a setof one or more channels on which the content-presentation device hasreceived content, and determining that the set of one or more channelsmatches at least a portion of a channel lineup associated with thecontent distributor.
 15. The non-transitory computer-readable storagemedium of claim 8, wherein determining that, after the modificationstart-time, at least the subgroup of the group of content-presentationdevices have detected a mismatch between reference fingerprint datarepresenting the modifiable content-segment and query fingerprint datarepresenting content received by at least the subgroup ofcontent-presentation devices comprises: receiving, from eachcontent-presentation device of at least the subgroup ofcontent-presentation devices, a notification indicating that thecontent-presentation device detected the mismatch within a predefinedtime period after the modification start-time and during performance ofthe content-modification operation, wherein the predefined time periodafter the modification start-time represents a time period during whicha detected mismatch between reference fingerprint data and queryfingerprint data is expected to be caused by a tuner device to which thecontent-presentation device is connected having already modified themodifiable content-segment before the modification start-time.
 16. Acomputing system comprising: a processor; and a non-transitorycomputer-readable storage medium, having stored thereon programinstructions that, upon execution by the processor, cause performance ofa set of operations comprising: determining that a group of multiplecontent-presentation devices are tuned to a same channel and that eachcontent-presentation device of the group of content-presentation devicesis scheduled to perform, at a modification start-time, a respectivecontent-modification operation that comprises modifying a modifiablecontent-segment in connection with an upcoming content-modificationopportunity on the channel; determining that, after the modificationstart-time, at least a subgroup of the group of content-presentationdevices have detected a mismatch between reference fingerprint datarepresenting the modifiable content-segment and query fingerprint datarepresenting content received by at least the subgroup ofcontent-presentation devices; determining that at least the subgroup ofcontent-presentation devices are connected to tuner devices associatedwith a same content distributor; and in response to determining that,after the modification start-time, at least the subgroup ofcontent-presentation devices have detected the mismatch between thereference fingerprint data representing the modifiable content-segmentand the query fingerprint data representing content received by at leastthe subgroup of content-presentation devices, and further in response todetermining that at least the subgroup of content-presentation devicesare connected to tuner devices associated with the content distributor,performing an action comprising updating historical content consumptiondata associated with at least the subgroup of content-presentationdevices to indicate that at least the subgroup of content-presentationdevices are receiving content on the same channel and have not changedchannels.
 17. The computing system of claim 16, wherein performing theaction comprises: performing the action in response to a determinationthat the modifiable content-segment that the group ofcontent-presentation devices is scheduled to modify is one of a list ofmodifiable content-segments that have been made available to amulti-channel video program distributor (MVPD) or another contentdistributor.
 18. The computing system of claim 16, wherein the group ofcontent-presentation devices are part of a content-modification system,wherein at least one of the tuner devices is a set-top box (STB) that isnot part of the content-modification system, wherein eachcontent-presentation device of the subgroup of content-presentationdevices belongs to a respective household, wherein eachcontent-presentation device of the subgroup of content-presentationdevices is connected to a respective tuner device of the tuner devices,wherein the respective tuner device belongs to the respective household,and wherein the content distributor is a multi-channel video programdistributor (MVPD).
 19. The computing system of claim 16, wherein theset of operations further comprise: determining that at least thesubgroup of content-presentation devices are located within the samegeographic area associated with the content distributor, whereinperforming the action is performed further in response to determiningthat at least the subgroup of content-presentation devices are locatedwithin the same geographic area associated with the content distributor.20. The computing system of claim 16, wherein determining that at leastthe subgroup of content-presentation devices are connected to tunerdevices associated with the same content distributor comprises: for eachcontent-presentation device of at least the subgroup ofcontent-presentation devices: receiving automatic content recognition(ACR) data that represents content received by the content-presentationdevice from a respective one of the tuner devices and that identifiesthe content distributor, and detecting a match between at least aportion of the ACR data and one or more of: a channel lineup associatedwith the content distributor, or one or more static user interfaceelements associated with the content distributor.